What are socket weld pipe fittings
What are socket weld pipe fittings
Socket welded pipe fittings are pipe connectors machined after die forging of round steel or steel ingots. Their connection form is socket welding (SW), which inserts the steel pipe into the socket for welding. Therefore, they are called “socket pipe fittings”, and the main manufacturing standards are ANSI/ASME B16.11.
How socket welding works
Socket welding is named after the fitting in which the pipe is placed for welding. These fittings include recessed receptacles into which the pipe is inserted before welding in place.
When inserting the pipe into the socket, there must be a gap between the end of the pipe and the bottom of the socket. This gap can prevent stress damage when the pipe expands to the socket due to heat during welding. This gap can be measured manually and a reference line can be marked on the pipe, or a permanent mating tool can be inserted into the joint to ensure that the pipe does not enter the socket at the bottom. Once placed, the pipe shall be fixed there by fillet welding where the pipe diameter meets the socket.
Socket welding creates a sealed, leak proof and high-pressure pipeline structure for the transmission of liquid or gas. Unlike butt welding, socket welding does not require any pre welding processing, but in order to ensure the integrity of the weld, both ends of the pipe should be clean.
Standard for Socket Weld Connections
Following Standards are used for designing socket weld pipe fittings:
- ASME B16.11: Forged Fittings, Socket Welding and Threaded.
- MSS-SP-83: Class 3000 Steel Pipe Unions, Socket-Welding and Threaded.
- ASME B16.34: Valves — Flanged, Threaded, and Welding End.
Made to ASTM A234, also available in accordance with ASME B16.11. This standard covers dimensions, pressure-temperature ratings, markings, tolerances, and requirements for carbon and forged carbon steel materials. In terms of acceptable forms of material, these may be bars, forgings, seamless tubing, and seamless pipe that meet the requirements for accessory chemicals, mechanical properties, and practices.
Metal Material of Socket Weld Pipe Fittings
Socket weld pipe fittings can be manufactured from following materials:
Stainless Steel:
- ASTM A/SA182 F304, F304L,F316, F316L, 316Ti, F317L, F321,F321H, F310H, F347H, N08904, F44 etc.
- (W1.4301, 1.4306, 1.4948, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4878, 1.4550, 1.4845, 1.4539, 1.4547 etc.).
Duplex & Super Duplex:
- ASTM A/SA182 F51, F53, F55, F59, F60( w1.4462, 1.4410, 1.4501, 1.4507 etc.)
Nickel Alloy:
- ASTM B564 N10276, N06022,N04400,N06600,N06601,N06625,N08800,N08825,N08020 (w2.4819,2.4360,2.4361,2.4602,2.4816,2.4851,2.4856,2.4858,1.4876,1.4958 ) etc.
Other Alloys:
- ASTM A105,A105N; St37.2, C22.8;
- ASTM A182 F11, F12, F22, F5, F91;
- ASTM A350 LF2, LF3;
- ASTM A694 F42, F46, F48, F50, F52, F56,F60,F65,F70 etc.
Carbon Steel (A-105)
Chemical Properties
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni |
| A105 | 0.035 | 0.6 – 1.05 | 0.1 – 0.35 | 0.035 | 0.04 | 0.3 | 0.12 | 0.4 |
| A350 LF2 | 0.3 | 0.6 – 1.35 | 0.15 – 0.3 | 0.035 | 0.04 | 0.3 | 0.12 | 0.4 |
| A350 LF3 | 0.2 | 0.9 | 0.20-0.35 | 0.035 | 0.04 | 0.3 | 0.12 | 3.3 – 3.7 |
| A694 F52 | 0.26-0.265 | 1.60-1.64 | 0.15-0.35 | 0.025-0.030 | 0.025-0.030 | |||
| A694 F56 | 0.26-0.265 | 1.60-1.64 | 0.15-0.35 | 0.025-0.030 | 0.025-0.030 | |||
| A694 F60 | 0.26-0.265 | 1.60-1.64 | 0.15-0.35 | 0.025-0.030 | 0.025-0.030 | |||
| A694 F65 | 0.26-0.265 | 1.60-1.64 | 0.15-0.35 | 0.025-0.030 | 0.025-0.030 | |||
| A694 F70 | 0.26-0.265 | 1.60-1.64 | 0.15-0.35 | 0.025-0.030 | 0.025-0.030 |
Mechanical Properties
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
| A105 | 485 | 250 | 22 |
| A350 LF2 | 485 – 655 | 250 | 22 |
| A350 LF3 | 485 – 655 | 260 | 22 |
| A694 F52 | 455 | 360 | 20 |
| A694 F56 | 470 | 385 | 20 |
| A694 F60 | 515 | 415 | 20 |
| A694 F65 | 530 | 450 | 20 |
| A694 F70 | 565 | 485 | 18 |
Alloy Steel (A-182)
Alloy Steel Chemical Composition
|
Chemical Composition Ranges and Limits, percent |
||||||||
| AISI Number |
C |
Mn |
P Max. |
S Max. |
Si |
Ni |
Cr |
Mo |
|---|---|---|---|---|---|---|---|---|
| AISI 4130 | 0.28/0.33 | 0.40/0.60 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4137 | 0.35/0.40 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4140 | 0.38/0.43 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4142 | 0.40/0.45 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4145 | 0.43/0.48 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4147 | 0.45/0.50 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4150 | 0.48/0.53 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15/0.25 |
| AISI 4161 | 0.56/0.64 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | 0.25/0.35 |
| AISI 4320 | 0.17/0.22 | 0.45/0.65 | 0.035 | 0.040 | 0.20/0.35 | 1.65/2.00 | 0.40/0.60 | 0.20/0.30 |
| AISI 4340 | 0.38/0.43 | 0.60/0.80 | 0.035 | 0.040 | 0.20/0.35 | 1.65/2.00 | 0.70/0.90 | 0.20/0.30 |
| AISI 4419 | 0.18/0.23 | 0.45/0.65 | 0.035 | 0.040 | 0.20/0.35 | — | — | 0.45/0.60 |
| AISI 4615 | 0.13/0.18 | 0.45/0.65 | 0.035 | 0.040 | 0.20/0.35 | 1.65/2.00 | — | 0.20/0.30 |
| AISI 4620 | 0.17/0.22 | 0.45/0.65 | 0.035 | 0.040 | 0.20/0.35 | 1.65/2.00 | — | 0.20/0.30 |
| AISI 4621 | 0.18/0.23 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 1.65/2.00 | — | 0.20/0.30 |
| AISI 4626 | 0.24/0.29 | 0.45/0.65 | 0.035 | 0.040 | 0.20/0.35 | 0.70/1.00 | — | 0.15/0.25 |
| AISI 4718 | 0.16/0.21 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.90/1.20 | 0.35/0.55 | 0.30/0.40 |
| AISI 4720 | 0.17/0.22 | 0.50/0.70 | 0.035 | 0.040 | 0.20/0.35 | 0.90/1.20 | 0.35/0.55 | 0.15/0.25 |
| AISI 4815 | 0.13/0.18 | 0.40/0.60 | 0.035 | 0.040 | 0.20/0.35 | 3.25/3.75 | — | 0.20/0.30 |
| AISI 4817 | 0.15/0.20 | 0.40/0.60 | 0.035 | 0.040 | 0.20/0.35 | 3.25/3.75 | — | 0.20/0.30 |
| AISI 4820 | 0.18/0.23 | 0.50/0.70 | 0.035 | 0.040 | 0.20/0.35 | 3.25/3.75 | — | 0.20/0.30 |
| AISI 5120 | 0.17/0.22 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | — |
| AISI 5130 | 0.28/0.33 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | — |
| AISI 5132 | 0.30/0.35 | 0.60/0.80 | 0.035 | 0.040 | 0.20/0.35 | — | 0.75/1.00 | — |
| AISI 5135 | 0.33/0.38 | 0.60/0.80 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.05 | — |
| AISI 5140 | 0.38/0.43 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | — |
| AISI 5145 | 0.43/0.48 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | — |
| AISI 5147 | 0.46/0.51 | 0.70/0.95 | 0.035 | 0.040 | 0.20/0.35 | — | 0.85/1.15 | — |
| AISI 5150 | 0.48/0.53 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | — |
| AISI 5155 | 0.51/0.59 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.70/0.90 | — |
| AISI 6150 | 0.48/0.53 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | — | 0.80/1.10 | 0.15 min. |
| AISI 8615 | 0.13/0.18 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8617 | 0.15/0.20 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8620 | 0.18/0.23 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8622 | 0.20/0.25 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8625 | 0.23/0.28 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8627 | 0.25/0.30 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8630 | 0.28/0.33 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8637 | 0.35/0.40 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8640 | 0.38/0.43 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8642 | 0.40/0.45 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8645 | 0.43/0.48 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8655 | 0.51/0.59 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.15/0.25 |
| AISI 8720 | 0.18/0.23 | 0.70/0.90 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.20/0.30 |
| AISI 8740 | 0.38/0.43 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.20/0.30 |
| AISI 8822 | 0.20/0.25 | 0.75/1.00 | 0.035 | 0.040 | 0.20/0.35 | 0.40/0.70 | 0.40/0.60 | 0.30/0.40 |
| AISI 9254 | 0.51/0.59 | 0.60/0.80 | 0.035 | 0.040 | 1.20/1.60 | 0.60/0.80 | — | — |
| AISI 9255 | 0.51/0.59 | 0.70/0.95 | 0.035 | 0.040 | 1.80/2.20 | — | — | — |
| AISI 9260 | 0.56/0.64 | 0.75/1.00 | 0.035 | 0.040 | 1.80/2.20 | — | — | — |
Grades shown in the above list with prefix letter E are normally made only by the basic electric furnace process. All others are normally manufactured by the basic open hearth or basic oxygen processes but may be manufactured by the basic electric furnace process with adjustments in phosphorus and sulphur.
Stainless Steel (A-182)
The elemental chemical composition of stainless steel is mainly composed of iron (FE) and chromium (CR). The chemical composition of other alloy elements also includes carbon (c), silicon (SI), manganese (MN), phosphorus (P), sulfur (s), nickel (Ni), molybdenum (MO), titanium (TI), nitrogen (n) and copper (Cu). Steel is corrosion resistant only when the percentage composition of chromium reaches a certain value. Therefore, the chromium content of stainless steel metal is generally at least 10.5%.
The following table lists the chemical composition of stainless steel alloys, including austenite SS 304, 304L 316, 316L, 321, 303, 302, 301, 904L, 201, martensite SS 440A, 440b, 440C, 420, ferrite SS 430, duplex stainless steel 2205, 2507, 329, etc.
Note: UOS (unless otherwise specified)
| Stainless Steel Chemical Composition Chart, Percentage (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel | C, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Si, ≤ | Cr | Ni | Mo | N, ≤ | Other Elements, ≤, UOS |
| 304 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-11.0 | – | – | – |
| 304L | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-12.0 | – | – | – |
| 316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | – | – |
| 316L | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | – | – |
| 321 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | 0.10 | ≥ Ti 5×(C+N), ≤ 0.70 |
| 201 | 0.15 | 5.50-7.50 | 0.06 | 0.03 | 1.00 | 16.0-18.0 | 3.5-5.5 | – | 0.25 | – |
| 202 | 0.15 | 7.50-10.00 | 0.06 | 0.03 | 1.00 | 17.0-19.0 | 4.0-6.0 | – | 0.25 | – |
| 205 | 0.12-0.25 | 14.0-15.5 | 0.06 | 0.03 | 1.00 | 16.5-18.0 | 1.0-1.7 | – | 0.32-0.40 | – |
| 301 | 0.15 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 6.0-8.0 | – | 0.10 | – |
| 301L | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 6.0-8.0 | – | 0.20 | – |
| 301LN | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 6.0-8.0 | – | 0.07-0.20 | – |
| 302 | 0.15 | 2.00 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 8.0-10.0 | – | 0.10 | – |
| 302B | 0.15 | 2.00 | 0.045 | 0.03 | 2.00-3.00 | 17.0-19.0 | 8.0-10.0 | – | 0.10 | – |
| 303 | 0.15 | 2.00 | 0.2 | ≥0.15 | 1.00 | 17.0-19.0 | 8.0-10.0 | – | – | – |
| 303Se | 0.15 | 2.00 | 0.2 | 0.06 | 1.00 | 17.0-19.0 | 8.0-10.0 | – | – | Se 0.15 |
| 304H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 18.0-20.0 | 8.0-10.5 | – | – | – |
| 304N | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-11.0 | – | 0.10-0.16 | – |
| 304LN | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 8.0-11.0 | – | 0.10-0.16 | – |
| 305 | 0.12 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 11.0-13.0 | – | – | – |
| 308 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 19.0-21.0 | 10.0-12.0 | – | – | – |
| 309 | 0.2 | 2.00 | 0.045 | 0.03 | 1.00 | 22.0-24.0 | 12.0-15.0 | – | – | – |
| 309S | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 22.0-24.0 | 12.0-15.0 | – | – | – |
| 309H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 22.0-24.0 | 12.0-15.0 | – | – | – |
| 309Cb | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 22.0-24.0 | 12.0-16.0 | – | – | ≥ Cb 10 x C, ≤1.10 |
| 309HCb | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 22.0-24.0 | 12.0-16.0 | – | – | ≥ Cb 10 x C, ≤1.10 |
| 310 | 0.25 | 2.00 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 19.0-22.0 | – | – | – |
| 310S | 0.08 | 2.00 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 19.0-22.0 | – | – | – |
| 310H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 24.0-26.0 | 19.0-22.0 | – | – | – |
| 310Cb | 0.08 | 2.00 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 19.0-22.0 | – | – | ≥ Cb 10 x C, ≤ 1.10 |
| 310 MoLN | 0.02 | 2.00 | 0.03 | 0.01 | 0.5 | 24.0-26.0 | 20.5-23.5 | 1.60-2.60 | 0.09-0.15 | – |
| 314 | 0.25 | 2.00 | 0.045 | 0.03 | 1.50-3.00 | 23.0-26.0 | 19.0-22.0 | – | – | – |
| 316H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | – | – |
| 316Ti | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.1 | ≥ Ti 5 × (C + N), ≤0.70 |
| 316Cb | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.1 | ≥ Cb 10 × C, ≤ 1.10 |
| 316N | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10-0.16 | – |
| 316LN | 0.03 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-13.0 | 2.00-3.00 | 0.10-0.16 | – |
| 317 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | 0.1 | – |
| 317L | 0.03 | 2.00 | 0.045 | 0.03 | 0.75 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | 0.1 | – |
| 317LM | 0.03 | 2.00 | 0.045 | 0.03 | 0.75 | 18.0-20.0 | 13.5-17.5 | 4.0-5.0 | 0.2 | – |
| 317LMN | 0.03 | 2.00 | 0.045 | 0.03 | 0.75 | 17.0-20.0 | 13.5-17.5 | 4.0-5.0 | 0.10-0.20 | – |
| 317LN | 0.03 | 2.00 | 0.045 | 0.03 | 0.75 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | 0.10-0.22 | – |
| 321 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | 0.1 | ≥ Ti 5 × (C + N), ≤ 0.70 |
| 321H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 9.0-12.0 | – | – | ≥ Ti 4 × (C + N), ≤ 0.70 |
| 334 | 0.08 | 1.00 | 0.03 | 0.015 | 1.00 | 18.0-20.0 | 19.0-21.0 | – | – | Al 0.15-0.60, Ti 0.15-0.60 |
| 347 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | – | ≥ Cb 10 × C, ≤ 1.00 |
| 347H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 9.0-13.0 | – | – | ≥ Cb 8 × C, ≤ 1.00 |
| 347LN | 0.005-0.020 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | – | 0.06-0.10 | Cb 0.20-0.50, 15 × C ≥ |
| 348 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | – | – | Cb 10×C-1.10, Ta 0.10, Co 0.20 |
| 348H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 9.0-13.0 | – | – | (Cb + Ta) 8×C ≥ , 1.00 ≤, Ta 0.10, Co 0.20 |
| 2205 | 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | – |
| 2304 | 0.03 | 2.5 | 0.04 | 0.03 | 1.00 | 21.5-24.5 | 3.0-5.5 | 0.05-0.60 | 0.05-0.60 | – |
| 255 | 0.04 | 1.5 | 0.04 | 0.03 | 1.00 | 24.0-27.0 | 4.5-6.5 | 2.9-3.9 | 0.10-0.25 | Cu 1.50-2.50 |
| 2507 | 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | Cu ≤0.50 |
| 329 | 0.08 | 1.00 | 0.04 | 0.03 | 0.75 | 23.0-28.0 | 2.0-5.00 | 1.00-2.00 | – | – |
| 403 | 0.15 | 1.00 | 0.04 | 0.03 | 0.5 | 11.5-13.0 | – | – | – | – |
| 405 | 0.08 | 1.00 | 0.04 | 0.03 | 1.00 | 11.5-14.5 | 0.5 | – | – | Al 0.10-0.30 |
| 410 | 0.08-0.15 | 1.00 | 0.04 | 0.03 | 1.00 | 11.5-13.5 | – | – | – | – |
| 410S | 0.08 | 1.00 | 0.04 | 0.03 | 1.00 | 11.5-13.5 | 0.6 | – | – | – |
| 414 | 0.15 | 1.00 | 0.04 | 0.03 | 1.00 | 11.5-13.5 | 1.25-2.50 | – | – | – |
| 416 | 0.15 | 1.25 | 0.06 | ≥0.15 | 1.00 | 12.0-14.0 | – | – | – | – |
| 416Se | 0.15 | 1.25 | 0.06 | ≥0.06 | 1.00 | 12.0-14.0 | – | – | – | Se 0.15 |
| 420 | 0.15, ≥ | 1.00 | 0.04 | 0.03 | 1.00 | 12.0-14.0 | – | – | – | – |
| 420F | 0.30-0.40 | 1.25 | 0.06 | ≥0.15 | 1.00 | 12.0-14.0 | 0.5 | – | – | Cu 0.60 |
| 420FSe | 0.20-0.40 | 1.25 | 0.06 | 0.15 | 1.00 | 12.0-14.0 | 0.5 | – | – | Se 0.15; Cu 0.60 |
| 422 | 0.20-0.25 | 0.50-1.00 | 0.025 | 0.025 | 0.5 | 11.0-12.5 | 0.50-1.00 | 0.90-1.25 | – | V (0.20-0.30), W (0.90-1.25) |
| 429 | 0.12 | 1.00 | 0.04 | 0.03 | 1.00 | 14.0-16.0 | – | – | – | – |
| 430 | 0.12 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | – | – | – |
| 430F | 0.12 | 1.25 | 0.06 | ≥0.15 | 1.00 | 16.0-18.0 | – | – | – | – |
| 430FSe | 0.12 | 1.25 | 0.06 | 0.06 | 1.00 | 16.0-18.0 | – | – | – | Se 0.15 |
| 439 | 0.03 | 1.00 | 0.04 | 0.03 | 1.00 | 17.0-19.0 | 0.5 | – | 0.03 | ≥ Ti [0.20+4(C+N)], ≤ 1.10; Al 0.15 |
| 431 | 0.2 | 1.00 | 0.04 | 0.03 | 1.00 | 15.0-17.0 | 1.25-2.50 | – | – | – |
| 434 | 0.12 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | 0.75-1.25 | – | |
| 436 | 0.12 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | 0.75-1.25 | – | ≥ Cb 5×C, ≤ 0.80 |
| 440A | 0.60-0.75 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | ≤0.75 | – | – |
| 440B | 0.75-0.95 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | ≤0.75 | – | – |
| 440C | 0.95-1.20 | 1.00 | 0.04 | 0.03 | 1.00 | 16.0-18.0 | – | ≤0.75 | – | – |
| 440F | 0.95-1.20 | 1.25 | 0.06 | 0.15 | 1.00 | 16.0-18.0 | 0.5 | – | – | Cu ≤0.60 |
| 440FSe | 0.95-1.20 | 1.25 | 0.06 | 0.06 | 1.00 | 16.0-18.0 | 0.5 | – | – | Se ≤0.15; Cu ≤0.60 |
| 442 | 0.2 | 1.00 | 0.04 | 0.04 | 1.00 | 18.0-23.0 | 0.6 | – | – | |
| 444 | 0.025 | 1.00 | 0.04 | 0.03 | 1.00 | 17.5-19.5 | 1.00 | 1.75-2.50 | 0.035 | Ti+Cb 0.20+4 × (C+N)-0.80 |
| 446 | 0.2 | 1.5 | 0.04 | 0.03 | 1.00 | 23.0-27.0 | 0.75 | – | 0.25 | – |
| 800 | 0.1 | 1.5 | 0.045 | 0.015 | 1.00 | 19.0-23.0 | 30.0-35.0 | – | – | Cu 0.75; ≥ FeH 39.5; Al 0.15-0.60 |
| 800H | 0.05-0.10 | 1.5 | 0.045 | 0.015 | 1.00 | 19.0-23.0 | 30.0-35.0 | – | – | Cu 0.75; ≥ FeH 39.5; Al 0.15-0.60 |
| 904L | 0.02 | 2.00 | 0.045 | 0.035 | 1.00 | 19.0-23.0 | 23.0-28.0 | 4.00-5.00 | 0.1 | Cu 1.00-2.00 |
| Alloy 20 | 0.07 | 2.00 | 0.045 | 0.035 | 1.00 | 19.0-21.0 | 32.0-38.0 | 2.00-3.00 | – | Cu 3.0-4.0; ≥ Nb 8 × C; ≤1.00 |
| XM-1 | 0.08 | 5.0-6.5 | 0.04 | 0.18-0.35 | 1.00 | 16.00-18.0 | 5.0-6.5 | – | – | Cu 1.75-2.25 |
| XM-2 | 0.15 | 2.00 | 0.05 | 0.11-0.16 | 1.00 | 17.0-19.0 | 8.0-10.0 | 0.40-0.60 | – | Al 0.60-1.00 |
| XM-5 | 0.15 | 2.5-4.5 | 0.2 | ≥0.25 | 1.00 | 17.0-19.0 | 7.0-10.0 | – | – | – |
| XM-6 | 0.15 | 1.50-2.50 | 0.06 | ≥0.15 | 1.00 | 12.0-14.0 | – | – | – | – |
| XM-10 | 0.08 | 8.0-10.0 | 0.045 | 0.03 | 1.00 | 19.0-21.5 | 5.5-7.5 | – | 0.15-0.40 | – |
| XM-11 | 0.04 | 8.0-10.0 | 0.045 | 0.03 | 1.00 | 19.0-21.5 | 5.5-7.5 | – | 0.15-0.40 | – |
| XM-15 | 0.08 | 2.00 | 0.03 | 0.03 | 1.50-2.50 | 17.0-19.0 | 17.5-18.5 | – | – | – |
| XM-17 | 0.08 | 7.50-9.00 | 0.045 | 0.03 | 0.75 | 17.5-22.0 | 5.0-7.0 | 2.00-3.00 | 0.25-0.50 | – |
| XM-18 | 0.03 | 7.50-9.00 | 0.045 | 0.03 | 0.75 | 17.5-22.0 | 5.0-7.0 | 2.00-3.00 | 0.25-0.50 | – |
| XM-19 | 0.06 | 4.0-6.0 | 0.045 | 0.03 | 1.00 | 20.5-23.5 | 11.5-13.5 | 1.50-3.00 | 0.20-0.40 | Cb 0.10-0.30, V 0.10-0.30 |
| XM-21 | 0.08 | 2.00 | 0.045 | 0.03 | 0.75 | 18.0-20.0 | 8.0-10.5 | – | 0.16-0.30 | – |
| XM-27 | 0.01 | 0.4 | 0.02 | 0.02 | 0.4 | 25.0-27.5 | 0.5 | 0.75-1.50 | 0.015 | Cu 0.20; Cb 0.05-0.20; (Ni + Cu) 0.50 |
| XM-33 | 0.06 | 0.75 | 0.04 | 0.02 | 0.75 | 25.0-27.0 | 0.5 | 0.75-1.50 | 0.04 | Cu 0.20; Ti 0.20-1.00; ≥ Ti 7(C+N) |
| XM-34 | 0.08 | 2.5 | 0.04 | ≥0.15 | 1.00 | 17.5-19.5 | – | 1.50-2.50 | – | – |
| PH 13-8Mo | 0.05 | 0.2 | 0.01 | 0.008 | 0.1 | 12.25-13.25 | 7.5-8.5 | – | – | – |
| 15-5 PH | 0.07 | 1 | 0.04 | 0.03 | 1 | 14.0-15.5 | 3.5-5.5 | – | – | 2.5-4.5 Cu; 0.15-0.45 Nb |
| 17-4 PH | 0.07 | 1 | 0.04 | 0.03 | 1 | 15.5-17.5 | 3.0-5.0 | – | – | 3.0-5.0 Cu; 0.15-0.45 Nb |
| 17-7 PH | 0.09 | 1 | 0.04 | 0.04 | 1 | 16.0-18.0 | 6.5-7.75 | – | – | 0.75-1.5 Al |
| Stainless Steel | C, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Si, ≤ | Cr | Ni | Mo | N, ≤ | Other Elements, ≤, UOS |
Low Alloy Steel (A-350)
Chemical Composition of Low Alloy Steel (A-350)
| Chemical Composition of ASTM A182 Low Alloy Steels, % | ||||||||
|---|---|---|---|---|---|---|---|---|
| ID. Symbol* | C | Mn | P | S | Si | Cr | Mo | Others |
| F1 | 0.28 | 0.60-0.90 | 0.045 | 0.045 | 0.15-0.35 | – | 0.44-0.65 | – |
| F2 | 0.05-0.21 | 0.60-0.80 | 0.040 | 0.040 | 0.10-0.60 | 0.50-0.81 | 0.44-0.65 | – |
| F5 | 0.15 | 0.30-0.60 | 0.030 | 0.030 | 0.50 | 4.0-6.0 | 0.44-0.65 | *A |
| F5A | 0.25 | 0.60 | 0.040 | 0.030 | 0.50 | 4.0-6.0 | 0.44-0.65 | *B |
| F9 | 0.15 | 0.30-0.60 | 0.030 | 0.030 | 0.50-1.00 | 8.0-10.0 | 0.90-1.10 | – |
| F10 | 0.10-0.12 | 0.50-0.80 | 0.040 | 0.030 | 1.00-1.40 | 7.0-9.0 | – | *C |
| F91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.0-9.5 | 0.85-1.05 | *D |
| F92 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.50 | 8.5-9.5 | 0.30-0.60 | *E |
| F122 | 0.07-0.14 | 0.70 | 0.020 | 0.010 | 0.50 | 10.00-11.50 | 0.25-0.60 | *F |
| F911 | 0.09-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.10-0.50 | 8.5-9.5 | 0.90-1.10 | *G |
| F11 CLASS1 | 0.05-0.15 | 0.30-0.60 | 0.030 | 0.030 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – |
| F11 CLASS2 | 0.10-0.20 | 0.30-0.80 | 0.040 | 0.040 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – |
| F11 CLASS3 | 0.10-0.20 | 0.30-0.80 | 0.040 | 0.040 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – |
| F12 CLASS1 | 0.05-0.15 | 0.30-0.60 | 0.045 | 0.045 | 0.50 | 0.80-1.25 | 0.44-0.65 | – |
| F12 CLASS2 | 0.10-0.20 | 0.30-0.80 | 0.040 | 0.040 | 0.10-0.60 | 0.80-1.25 | 0.44-0.65 | – |
| F21 | 0.05-0.15 | 0.30-0.60 | 0.040 | 0.040 | 0.50 | 2.7-3.3 | 0.80-1.06 | – |
| F3V | 0.05-0.10 | 0.30-0.60 | 0.020 | 0.020 | 0.10 | 2.8-3.2 | 0.90-1.10 | *H |
| F3VCb | 0.10-0.15 | 0.30-0.60 | 0.020 | 0.010 | 0.10 | 2.7-3.3 | 0.90-1.10 | *I |
| F22 CLASS1 | 0.05-0.15 | 0.30-0.60 | 0.040 | 0.040 | 0.50 | 2.00-2.50 | 0.87-1.13 | – |
| F22 CLASS3 | 0.05-0.15 | 0.30-0.60 | 0.040 | 0.040 | 0.50 | 2.00-2.50 | 0.87-1.13 | – |
| F22V | 0.11-0.15 | 0.30-0.60 | 0.015 | 0.010 | 0.10 | 2.00-2.50 | 0.90-1.10 | *J |
| F23 | 0.04-0.10 | 0.10-0.60 | 0.030 | 0.010 | 0.50 | 1.90-2.60 | 0.05-0.30 | *K |
| F24 | 0.05-0.10 | 0.30-0.70 | 0.020 | 0.010 | 0.15-0.45 | 2.20-2.60 | 0.90-1.10 | *L |
| FR | 0.20 | 0.40-1.06 | 0.045 | 0.050 | – | – | – | *M |
| F36 | 0.10-0.17 | 0.80-1.20 | 0.030 | 0.025 | 0.25-0.50 | 0.30 | 0.25-0.50 | *N |
*”ID.S” refers to the identification symbol of the grades stipulated by ASTM A182.
*All values are maximum unless a range is provided or otherwise specified.
*A – Ni:≤0.50; *B – Ni:≤0.50; *C – Ni:19-22;
*D – Ni:≤0.40,Co:0.06-0.10%,N:0.03-0.07,Al:≤0.02,V:0.18-0.25,T≤0.01%,Zr≤0.01.
*E – Ni:≤0.40,Co:0.04-0.09;V:0.15-0.25,N:0.030-0.070,Al:≤0.02,W:1.50-2.00,B:0.001-0.006,Ti&Zr:≤0.01.
*F – Ni:≤0.50,Co:0.04-0.10,V:0.15-0.30,B:≤0.005,N:0.04-0.10,Al:≤0.02,Cu:0.30-1.70,W:1.5-2.5,Ti&Zr:≤0.01.
*G – Ni:≤0.40,Co:0.06-0.10,W:0.90-1.10,Al:≤0.02,N:0.04-0.09,V:0.18-0.25,B:0.0003-0.006,Ti&Zr:≤0.01.
*H – Ti:0.015-0.035,V:0.20-0.30,B:0.001-0.003.
*I – Ni:≤0.25,Co:0.015-0.070,Ti:≤0.015,V:0.20-0.30,Cu:≤0.25,Ca:0.0005-0.0150.
*J – Ni:≤0.25,Co:≤0.07,Ti≤0.030,Cu≤0.20,V:0.25-0.35,B:≤0.002,Ca:≤0.015.
*K – Ni:≤0.40,Co:0.02-0.08,Ti:0.005-0.060,V:0.20-0.30,B:0.001-0.006,N:≤0.015,Al:≤0.030,W:1.45-1.75.
*L – Ti:0.06-0.10,V:0.20-0.30,N:≤0.12,Al:≤0.020,B:0.0015-0.0070
*M – Ni:1.60-2.24,Cu:0.75-1.25. *N – Ni:1.00-1.30,Co:0.015-0.045,N:≤0.20,Al:≤0.050,Cu:0.50-0.80,V:≤0.02.
*All chemical content values listed above from *A to *N shall be furnished with the unit of %.
Mechanical Properties of Low Alloy Steel (A-350)
| Mechanical Properties of ASTM A182 Low Alloy Steels | |||||
|---|---|---|---|---|---|
| Grade |
Tensile Strength min. ksi[MPa] |
Yield Strength min. ksi[MPa] |
Elongation, min. % |
Reduction of Area, min. % |
Brinell Hardness Number, HBW |
| F1 | 70[485] | 40[275] | 20 | 30 | 143-192 |
| F2 | 70[485] | 40[275] | 20 | 30 | 143-192 |
| F5 | 70[485] | 40[275] | 20 | 35 | 143-217 |
| F5a | 90[620] | 65[450] | 22 | 50 | 187-248 |
| F9 | 85[585] | 55[380] | 20 | 40 | 179-217 |
| F10 | 80[550] | 30[205] | 30 | 50 | – |
| F91 | 90[620] | 60[415] | 20 | 40 | 190-248 |
| F92 | 90[620] | 64[440] | 20 | 45 | ≤269 |
| F122 | 90[620] | 58[400] | 20 | 40 | ≤250 |
| F911 | 90[620] | 64[440] | 18 | 40 | 187-248 |
| F11 Class 1 | 60[415] | 30[205] | 20 | 45 | 121-174 |
| F11 Class 2 | 70[485] | 40[275] | 20 | 30 | 143-207 |
| F11 Class 3 | 75[515] | 45[310] | 20 | 30 | 156-207 |
| F12 Class 1 | 60[415] | 32[220] | 20 | 45 | 121-174 |
| F12 Class 2 | 70[485] | 40[275] | 20 | 30 | 143-207 |
| F21 | 75[515] | 45[310] | 20 | 30 | 156-207 |
| F3V & F3VCb | 85-110[585-760] | 60[415] | 18 | 45 | 174-237 |
| F22 Class 1 | 60[415] | 30[205] | 20 | 35 | ≤170 |
| F22 Class 3 | 75[515] | 45[310] | 20 | 30 | 156-207 |
| F22V | 85-110[585-780] | 60[415] | 18 | 45 | 174-237 |
| F23 | 74[510] | 58[400] | 20 | 40 | ≤220 |
| F24 | 85[585] | 60[415] | 20 | 40 | ≤248 |
| FR | 63[435] | 46[315] | 25 | 38 | ≤197 |
| F36 Class 1 | 90[620] | 64[440] | 15 | – | ≤252 |
| F36 Class 2 | 95.5[660] | 66.5[460] | 15 | – | ≤252 |
Heat Treatment of Low Alloy Steel (A-350)
| Heat Treatment of ASTM A182 Alloy Steels | |
|---|---|
| Grade | Heat Treatment Process |
| F1 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C]. |
| F2 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C]. |
| F5, F5a | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C]. |
| F9 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C]. |
| F10 | Type: solution treat and quench; Minimum solutioning temperature:1900°F[1040°C]; Cooling media: liquid; Quenching cool below: 500°F[260°C] |
| F91 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C]. |
| F92 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C]. |
| F122 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C]. |
| F911 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air or liquid cool; Temperature range of tempering: 1365-1435°F[740-780°C]. |
| F11 Class 1, 2, 3 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C]. |
| F12 Class 1, 2 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C]. |
| F21, F3V, F3VCb | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C]. |
| F22, Class 1, 3 | Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C]. |
| F22V | Type: normalize and temper, or quench and temper; Minimum austenitizing/solutioning temperature: 1650°F[900°F]; air or liquid cool; Minimum tempering temperature: 1250°F[675°C]. |
| F23 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C]. |
| F24 | Type: normalize and temper; Temperature range of austenitizing/solutioning:1800-1975°F[980-1080°C]; air or liquid cool; Temperature range of tempering: 1350-1470°F[730-800°C]. |
| FR | Type: anneal, or normalize, or normalize and temper; Minimum austenitizing/solutioning temperature: 1750°F[955°C]; air or furnace cool; Minimum tempering temperature: 1250°F[675°C]. |
| F36 Class 1 | Type: normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:air cool; Minimum tempering temperature:1100°F[595°C]. |
| F36 Class 2 | Type: normalize and temper, or quench and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:air cool or liquid; Minimum tempering temperature:1100°F[595°C]. |
*After hot working, the ASTM A182 low alloy steel forings shall be cooled to a temperature below 1000°F[538°C] prior to heat treatment.
Typical Steel Grades, UNS designation, and Steel Names of Low Alloy Steel (A-350)
| Steel Grades | UNS Designation | Steel Names |
|---|---|---|
| ASTM A182 F1 | K12822 | C-0.5Mo |
| ASTM A182 F2 | K12122 | 0.5Cr-0.5Mo |
| ASTM A182 F5 | K41545 | 5Cr-0.5Mo |
| ASTM A182 F5a | K42544 | 5Cr-0.5Mo |
| ASTM A182 F9 | K90941 | 9Cr-1Mo |
| ASTM A182 F10 | S33100 | 20Ni-8Cr |
| ASTM A182 F91 | K90901 | 9Cr-1Mo-V |
| ASTM A182 F92 | K92460 | 9Cr-0.5Mo-1.8W-V |
| ASTM A182 F11 CL1 | K11597 | 1.25Cr–0.5Mo–Si |
| ASTM A182 F11 CL2 | K11572 | 1.25Cr–0.25Mo–Si |
| ASTM A182 F11 CL3 | K11572 | 1.25Cr–0.5Mo–Si |
| ASTM A182 F12 CL1 | K11562 | 1Cr-0.5Mo |
| ASTM A182 F12 CL2 | K11564 | 1Cr-0.5Mo |
| ASTM A182 F22 CL1 | K21590 | 2.25Cr-1Mo |
| ASTM A182 F22 CL3 | K21590 | 2.25Cr-1Mo |
| ASTM A182 F21 | K31545 | 3Cr-1Mo |
| ASTM A182 F122 | K91271 | – |
| ASTM A182 F911 | K91061 | – |
| ASTM A182 F3V | K31830 | – |
| ASTM A182 F3VCb | K31390 | – |
| ASTM A182 F22V | K31835 | 2.25Cr-1Mo-V |
| ASTM A182 F23 | K41650 | – |
| ASTM A182 F24 | K30736 | 2.25Cr-1Mo-0.25V-Ti-B |
| ASTM A182 FR | K22035 | – |
| ASTM A182 F36 | K21001 | 1.15Ni-0.65Cu-Mo-Co |
Duplex Stainless Steel
Duplex Stainless Steel Chemical Composition
|
Type |
Example grades |
Composition |
PREN |
|||
|
Cr% |
Ni% |
Mo% |
N% |
|||
|
Lean |
S31500, S32304, S32404 |
20-24 |
1-5 |
0.1-0.3 |
0.1-0.22 |
24-25 |
|
Standard |
S31803, S32205 |
21-23 |
4.5-6 |
2.5-3.5 |
0.1-0.22 |
33-35 |
|
Super-duplex |
S32520, S32550, S32750 |
24-29 |
4.5-8 |
2.7-4.5 |
0.1-0.35 |
>40 |
|
Hyper-duplex |
S32707, S33207 |
27 |
6.5 |
5 |
0.4 |
49 |
Cooper Nickel
The most common copper-nickel alloys being 90/10 cupronickel and 70/30 cupronickel, the chemical composition of both are given below.
90/10 Cupronickel
| Copper | 86 – 89.7% |
| Nickel | 9.0 – 11.0% |
| Iron | 1.0 – 2.0% |
| Manganese | 0.3 – 1.0% |
70/30 Cupronickel
| Copper | 70.1 – 65.5% |
| Nickel | 29.0 – 32.0% |
| Iron | 0.5 – 1.5% |
| Manganese | 0.4 – 1.0% |
How Many Types of Socket Weld Pipe Fittings
The varieties of socket pipe fittings include 45 ° SW elbow, 90 ° SW elbow, SW tee, SW cross, 45 ° reducing tee, double socket pipe hoop, single socket pipe hoop, SW cap, SW union, branch pipe seat, etc. Among them, tee and cross can be divided into equal diameter and different diameter; Double socket pipe hoops can also be divided into equal diameter and different diameter, and the different diameter double socket pipe hoops can also be divided into concentric and eccentric.
Types of socket weld fittings by class, size and wall thickness
| Description | Class Designation | ||
| 3000 | 6000 | 9000 | |
| Elbows 45 and 90 degrees, Tees, Crosses, Couplings, Half-Couplings, End or Pipe Caps | 1/2 – 4 | 1/2 – 2 | 1/2 – 2 |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
|
Pipe Size by Wall Thickness |
SCH 80 XS |
SCH 160 | XXS |
Plugs and Bushings are not identified. They may be used up through Class 6000 NPS.
Socket Weld Couplings
The varieties of socket pipe couplings include full-couplings and half-couplings. Among them, the full-coupling has equal and different diameter, and the full-coupling of different diameter has concentric and eccentric points.
The socket and socket are located at the two ends of the bending part; compared with the existing technology, the design is reasonable, simple and practical, improving the quality and convenience of operation.
The socket pipe coupling can be widely used for different caliber pipes, including single pass, tee, cross, etc., and also for water meter and valve. Due to the socket structure, it makes the pipe joint reduce the cost, installation, use and maintenance extremely convenient, and also has a very high leak-proof ability.
Full-coupling
Forged socket welded full-couplings are available in three grades of 3000 pounds, 6000 pounds and 9000 pounds, and their specifications comply with ASME B16.11 and EN10241 standards.
Half-coupling
The half coupling could be directly welded to the run pipe in order to make a branch connection.
SW couplings provide sealed and stable connections for pipes of different sizes. They are irreplaceable in the medium, high temperature and high pressure conditions of small diameter pipeline systems.
|
Class 3000 |
||||
| NPS | Socket Bore | Depth Socket | Bore DIA | Socket wall THK |
| B | J | D | C | |
| 1/2 |
21.95 21.70 |
10 |
16.6 15 |
4.65 4.10 |
| 3/4 |
27.30 27.05 |
13 |
21.7 20.2 |
4.90 4.25 |
| 1 |
34.05 33.80 |
13 |
27.4 25.9 |
5.70 5.00 |
| 1.1/4 |
42.80 42.55 |
13 |
35.8 34.3 |
6.05 5.30 |
| 1.1/2 |
48.90 48.65 |
13 |
41.7 40.1 |
6.35 5.55 |
| 2 |
61.35 61.10 |
16 |
53.5 51.7 |
6.95 6.05 |
| 2.1/2 |
74.20 73.80 |
16 |
64.2 61.2 |
8.75 7.65 |
| 3 |
90.15 89.80 |
16 |
79.5 46.4 |
9.50 8.30 |
| 4 |
115.80 115.45 |
19 |
103.8 100.7 |
10.70 9.35 |
| NPS | Laying lengths | |||
|
Coupling E |
Half coupling F |
|||
| 1/2 | 9.5 | 22.5 | ||
| 3/4 | 9.5 | 23.5 | ||
| 1 | 13 | 29 | ||
| 1.1/4 | 13 | 30 | ||
| 1.1/2 | 13 | 32 | ||
| 2 | 19 | 41 | ||
| 2.1/2 | 19 | 42.5 | ||
| 3 | 19 | 44.5 | ||
| 4 | 19 | 47.5 | ||
|
Class 6000 |
||||
| NPS | Socket Bore | Depth Socket | Bore DIA | Socket wall THK |
| B | J | D | C | |
| 1/2 |
21.95 21.70 |
10 |
12.5 11 |
5.95 5.20 |
| 3/4 |
27.30 27.05 |
13 |
16.3 14.8 |
6.95 6.05 |
| 1 |
34.05 33.80 |
13 |
21.5 19.9 |
7.90 6.95 |
| 1.1/4 |
42.80 42.55 |
13 |
30.2 28.7 |
7.90 6.95 |
| 1.1/2 |
48.90 48.65 |
13 |
34.7 33.2 |
8.90 7.80 |
| 2 |
61.35 61.10 |
16 |
43.6 42.1 |
10.90 9.50 |
| NPS | Laying lengths | |||
|
Coupling E |
Half coupling F |
|||
| 1/2 | 9.5 | 22.5 | ||
| 3/4 | 9.5 | 23.5 | ||
| 1 | 13 | 29 | ||
| 1.1/4 | 13 | 30 | ||
| 1.1/2 | 13 | 32 | ||
| 2 | 19 | 41 | ||
General notes..
- Dimensions are in millimeters unless otherwise indicated.
- Socket Bore (B) – Maximum and Minimum dimensions.
- Bore Diameter (D) – Maximum and Minimum dimensions.
- Socket wall thickness – (C) – Average of Socket wall thickness.
-
Dimensional tolerances laying lengths – (E & F)
NPS 1/2 and NPS 3/4 = +/- 1.5 mm
NPS 1 to NPS 2 = +/- 2 mm
NPS 2.1/2 to NPS 4 = +/- 2.5 mm
Reducing coupling
The reducing coupling helps to join two different outside diameters of a pipe.
Dimensions of Socket Weld Reducing Couplings ASME B16.11
|
Class 3000 |
|||||||
| NPS | Socket Bore |
Depth Socket J |
Bore dia | ||||
| B1 | B2 | B1 | B2 | D | |||
|
3/4 1/2 |
27.30 27.05 |
21.95 21.70 |
13 | 10 |
16.6 15 |
||
|
1 3/4 |
34.05 33.80 |
27.30 27.05 |
13 | 13 |
21.7 20.2 |
||
|
1 1/2 |
34.05 33.80 |
21.95 21.70 |
13 | 10 |
16.6 15 |
||
|
1.1/4 1 |
42.80 42.55 |
34.05 33.80 |
13 | 13 |
27.4 25.9 |
||
|
1.1/2 1 |
48.90 48.65 |
34.05 33.80 |
13 | 13 |
27.4 25.9 |
||
|
1.1/2 3/4 |
48.90 48.65 |
27.30 27.05 |
13 | 13 |
21.7 20.2 |
||
|
1.1/2 1/2 |
48.90 48.65 |
21.95 21.70 |
13 | 10 |
16.6 15 |
||
|
2 1.1/2 |
61.35 61.10 |
48.90 48.65 |
16 | 13 |
41.7 40.1 |
||
|
2 1 |
74.20 73.80 |
34.05 33.80 |
16 | 13 |
27.4 25.9 |
||
| NPS | Length Coupling |
Diameter Coupling |
|||||
| Q | R | ||||||
|
3/4 1/2 |
35 | 36 | |||||
|
1 3/4 |
38.1 | 45.2 | |||||
|
1 1/2 |
38.1 | 45.2 | |||||
|
1.1/4 1 |
38.1 | 55.1 | |||||
|
1.1/2 1 |
38.1 | 60 | |||||
|
1.1/2 3/4 |
38.1 | 60 | |||||
|
1.1/2 1/2 |
38.1 | 60 | |||||
|
2 1.1/2 |
51.3 | 74.9 | |||||
|
2 1 |
51.3 | 74.9 | |||||
|
Class 6000 |
|||||||
| NPS | Socket Bore |
Depth Socket J |
Bore dia | ||||
| B1 | B2 | B1 | B2 | D | |||
|
3/4 1/2 |
27.30 27.05 |
21.95 21.70 |
13 | 10 |
12.5 11 |
||
|
1 3/4 |
34.05 33.80 |
27.30 27.05 |
13 | 13 |
16.3 14.8 |
||
|
1 1/2 |
34.05 33.80 |
21.95 21.70 |
13 | 10 |
12.5 11 |
||
|
1.1/4 1 |
42.80 42.55 |
34.05 33.80 |
13 | 13 |
21.5 19.9 |
||
|
1.1/2 1 |
48.90 48.65 |
34.05 33.80 |
13 | 13 |
21.5 19.9 |
||
|
1.1/2 3/4 |
48.90 48.65 |
27.30 27.05 |
13 | 13 |
16.3 14.8 |
||
|
1.1/2 1/2 |
48.90 48.65 |
21.95 21.70 |
13 | 10 |
12.5 11 |
||
|
2 1.1/2 |
61.35 61.10 |
48.90 48.65 |
16 | 13 |
34.7 33.2 |
||
|
2 1 |
74.20 73.80 |
34.05 33.80 |
16 | 13 |
21.5 19.9 |
||
| NPS | Length Coupling |
Diameter Coupling |
|||||
| Q | R | ||||||
|
3/4 1/2 |
35 | 40.1 | |||||
|
1 3/4 |
38.1 | 50 | |||||
|
1 1/2 |
38.1 | 50 | |||||
|
1.1/4 1 |
38.1 | 57.9 | |||||
|
1.1/2 1 |
38.1 | 65 | |||||
|
1.1/2 3/4 |
38.1 | 65 | |||||
|
1.1/2 1/2 |
38.1 | 65 | |||||
|
2 1.1/2 |
51.3 | 82 | |||||
|
2 1 |
51.3 | 82 | |||||
General notes..
- Dimensions are in millimeters unless otherwise indicated.
- Socket Bore (B1 / B2) – Maximum and Minimum dimensions.
- Bore Diameter (D) – Maximum and Minimum dimensions.
Reducer insert
The reducer inserts have been manufactured according to MSS SP-79. It helps to enable economic and quick combinations of pipeline reductions. As such, these could be made by using standard socket weld fittings.
Dimensions of Reducer Insert ASME B16.11
| Class 3000 | Class 6000 | Class 9000 | ||||||||||||
| Nominal Pipe Size | C | D |
Fitting
Type
|
A | B | E |
Fitting
Type
|
A | B | E |
Fitting
Type
|
A | B | E |
| 3/8 x 1/4 | 0.675 | 0.555 | 1 | 7/16 | 3/4 | 15/16 | 1 | 7/16 | 7/8 | 1 | ||||
| 1/2 x 3/8 | 0.850 | 0.690 | 1 | 7/16 | 13/16 | 1 1/16 | 1 | 7/16 | 15/16 | 1 3/16 | ||||
| 1/2 x 1/4 | 0.850 | 0.555 | 1 | 7/16 | 13/16 | 15/16 | 1 | 7/16 | 7/8 | 1 | ||||
| 3/4 x 1/2 | 1.060 | 0.855 | 1 | 7/16 | 7/8 | 1 5/16 | 1 | 7/16 | 1 1/16 | 1 3/8 | 1 | 7/16 | 1 3/16 | 1 3/4 |
| 3/4 x 3/8 | 1.060 | 0.690 | 2 | 7/16 | 5/8 | – | 1 | 7/16 | 7/8 | 1 3/16 | ||||
| 3/4 x 1/4 | 1.060 | 0.555 | 2 | 3/8 | 11/16 | – | 2 | 3/8 | 7/8 | – | ||||
| 1 x 3/4 | 1.325 | 1.065 | 1 | 9/16 | 15/16 | 1 1/2 | 1 | 9/16 | 1 1/8 | 1 11/16 | 1 | 9/16 | 1 1/4 | 2 |
| 1 x 1/2 | 1.325 | 0.855 | 2 | 1/2 | 5/8 | – | 1 | 7/16 | 1 1/8 | 1 3/8 | 1 | 7/16 | 1 1/8 | 1 3/4 |
| 1 x 3/8 | 1.325 | 0.690 | 2 | 7/16 | 11/16 | – | 2 | 1/2 | 7/8 | – | ||||
| 1 x 1/4 | 1.325 | 0.555 | 2 | 3/8 | 3/4 | – | 2 | 3/8 | 15/16 | – | ||||
| 1 1/4 x 1 | 1.670 | 1.330 | 1 | 9/16 | 1 | 1 7/8 | 1 | 9/16 | 1 3/16 | 2 | 1 | 9/16 | 1 3/8 | 2 3/8 |
| 1 1/4 x 3/4 | 1.670 | 1.065 | 2 | 9/16 | 11/16 | – | 2 | 9/16 | 13/16 | – | 1 | 9/16 | 1 3/16 | 2 |
| 1 1/4 x 1/2 | 1.670 | 0.855 | 2 | 1/2 | 3/4 | – | 2 | 1/2 | 7/8 | – | 2 | 1/2 | 7/8 | – |
| 1 1/4 x 3/8 | 1.670 | 0.690 | 2 | 7/16 | 13/16 | – | 2 | 7/16 | 15/16 | – | ||||
| 1 1/4 x 1/4 | 1.670 | 0.555 | 2 | 3/8 | 7/8 | – | 2 | 3/8 | 1 | – | ||||
| 1 1/2 x 1 1/4 | 1.910 | 1.675 | 1 | 9/16 | 1 1/8 | 2 1/4 | 1 | 9/16 | 1 3/8 | 2 3/8 | 1 | 9/16 | 1 5/8 | 2 3/4 |
| 1 1/2 x 1 | 1.910 | 1.330 | 2 | 5/8 | 11/16 | – | 1 | 9/16 | 1 3/16 | 2 | 1 | 9/16 | 1 3/8 | 2 3/8 |
| 1 1/2 x 3/4 | 1.910 | 1.065 | 2 | 9/16 | 3/4 | – | 2 | 9/16 | 1 | – | 2 | 9/16 | 1 | – |
| 1 1/2 x 1/2 | 1.910 | 0.855 | 2 | 1/2 | 13/16 | – | 2 | 1/2 | 1 1/16 | – | 2 | 9/16 | 1 | – |
| 1 1/2 x 3/8 | 1.910 | 0.690 | 2 | 7/16 | 7/8 | – | 2 | 7/16 | 1 1/8 | – | ||||
| 2 x 1 1/2 | 2.385 | 1.915 | 1 | 9/16 | 1 1/4 | 2 1/2 | 1 | 9/16 | 1 7/8 | 2 11/16 | 1 | 9/16 | 2 1/16 | 3 |
| 2 x 1 1/4 | 2.385 | 1.675 | 2 | 11/16 | 13/16 | – | 2 | 7/8 | 15/16 | – | 1 | 9/16 | 2 | 2 3/4 |
| 2 x 1 | 2.385 | 1.330 | 2 | 5/8 | 7/8 | – | 2 | 13/16 | 1 | – | 2 | 13/16 | 1 | – |
| 2 x 3/4 | 2.385 | 1.065 | 2 | 9/16 | 15/16 | – | 2 | 3/4 | 1 1/16 | – | 2 | 3/4 | 1 1/16 | – |
| 2 x 1/2 | 2.385 | 0.855 | 2 | 1/2 | 1 | – | 2 | 11/16 | 1 1/8 | – | 2 | 11/16 | 1 1/8 | – |
Socket Weld Union
Union is a common pipe connector that can be easily installed and disassembled. It is mainly composed of nut, cloud head and flat connection.
Dimensions of Socket Weld Union ASME B16.11
|
Nominal Diameter
|
Outside Diameter |
Wall Thickness |
Socket Bore |
Water way Bore |
Depth of Socket |
Length Assem Nominal |
|||
|
Dmin
|
Cmin
|
d1
|
d2
|
Jmin
|
L
|
||||
|
DN
|
NPS
|
Socket |
Threaded
|
Socket
|
Threaded
|
Socket
|
Socket & Threaded |
Socket
|
Socket & Threaded
|
|
6
|
1/8
|
21.8
|
14.7
|
3.2
|
2.5
|
10.65
|
6.43
|
10
|
41.4
|
|
8
|
1/4
|
21.8
|
19.0
|
3.3
|
3.1
|
14.10
|
9.45
|
10
|
41.4
|
|
10
|
3/8
|
25.9
|
22.9
|
3.5
|
3.2
|
17.55
|
13.51
|
10
|
46.0
|
|
15
|
1/2
|
31.2
|
27.7
|
4.1
|
3.8
|
21.70
|
17.07
|
10
|
49.0
|
|
20
|
3/4
|
37.1
|
33.5
|
4.3
|
4.0
|
27.05
|
21.39
|
13
|
56.9
|
|
25
|
1
|
45.5
|
41.4
|
5.0
|
4.6
|
33.80
|
27.74
|
13
|
62.0
|
|
32
|
11/4
|
54.9
|
50.5
|
5.3
|
4.9
|
42.55
|
35.36
|
13
|
71.1
|
|
40
|
11/2
|
61.5
|
57.2
|
5.6
|
5.1
|
48.65
|
41.20
|
13 |
76.5
|
|
50
|
2
|
75.2
|
70.1
|
6.1
|
5.6
|
61.10
|
52.12
|
16
|
86.1
|
|
65
|
21/2
|
91.7
|
85.3
|
7.7
|
7.1
|
73.80
|
64.31
|
16
|
102.4
|
|
80
|
3
|
109.2
|
102.4
|
8.4
|
7.7
|
89.80
|
77.27
|
16
|
109.0
|
Socket Weld Elbow
Socket weld elbow (SW elbow) has 45 degree and 90 degree types, manufactured in forging processes and also has long radius (LR with 1.5 X OD) and short radius (SR with 1 X 0D) model, it has been a common socket weld fittings that used in the pipelines for changing the fluid directions.
According to common standards, the specifications of socket elbows include DN6, DN8, DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100. The commonly used ordering specification is dn15—dn50. If the specification is beyond the scope, the design and processing of drawings can be communicated with customers.
According to pressure grade: 3000LB, 6000LB, 9000LB or SCH80, SCH160, XXS
|
Class 3000 |
|||||
| NPS | Socket Bore | Depth Socket | Bore DIA | Socket WT | Body WT |
| B | J | D | C | G | |
| 1/2 |
21.95 21.70 |
10 |
16.6 15 |
4.65 4.10 |
3.75 |
| 3/4 |
27.30 27.05 |
13 |
21.7 20.2 |
4.90 4.25 |
3.90 |
| 1 |
34.05 33.80 |
13 |
27.4 25.9 |
5.70 5.00 |
4.55 |
| 1.1/4 |
42.80 42.55 |
13 |
35.8 34.3 |
6.05 5.30 |
4.85 |
| 1.1/2 |
48.90 48.65 |
13 |
41.7 40.1 |
6.35 5.55 |
5.10 |
| 2 |
61.35 61.10 |
16 |
53.5 51.7 |
6.95 6.05 |
5.55 |
| 2.1/2 |
74.20 73.80 |
16 |
64.2 61.2 |
8.75 7.65 |
7.00 |
| 3 |
90.15 89.80 |
16 |
79.5 46.4 |
9.50 8.30 |
7.60 |
| 4 |
115.80 115.45 |
19 |
103.8 100.7 |
10.70 9.35 |
8.55 |
| NPS |
Center to bottom of socket A |
||||
| 90° | 45° | ||||
| 1/2 | 15.5 | 11.5 | |||
| 3/4 | 19.5 | 12.5 | |||
| 1 | 22 | 14 | |||
| 1.1/4 | 27 | 17 | |||
| 1.1/2 | 32 | 21 | |||
| 2 | 38 | 25 | |||
| 2.1/2 | 41.5 | 29 | |||
| 3 | 57.5 | 31.5 | |||
| 4 | 66.5 | 41.5 | |||
|
Class 6000 |
|||||
| NPS | Socket Bore | Depth Socket | Bore DIA | Socket WT | Body WT |
| B | J | D | C | G | |
| 1/2 |
21.95 21.70 |
10 |
12.5 11 |
5.95 5.20 |
4.80 |
| 3/4 |
27.30 27.05 |
13 |
16.3 14.8 |
6.95 6.05 |
5.55 |
| 1 |
34.05 33.80 |
13 |
21.5 19.9 |
7.90 6.95 |
6.35 |
| 1.1/4 |
42.80 42.55 |
13 |
30.2 28.7 |
7.90 6.95 |
6.35 |
| 1.1/2 |
48.90 48.65 |
13 |
34.7 33.2 |
8.90 7.80 |
7.15 |
| 2 |
61.35 61.10 |
16 |
43.6 42.1 |
10.90 9.50 |
8.75 |
| NPS |
Center to bottom of socket A |
||||
| 90° | 45° | ||||
| 1/2 | 19.5 | 12.5 | |||
| 3/4 | 22.5 | 14.5 | |||
| 1 | 27 | 17 | |||
| 1.1/4 | 32 | 21 | |||
| 1.1/2 | 38 | 25 | |||
| 2 | 41 | 29 | |||
General notes..
- Dimensions are in millimeters unless otherwise indicated.
- Socket Bore (B) – Maximum and minimum dimensions.
- Bore Diameter (D) – Maximum and minimum dimensions.
- Socket wall thickness – (C) – Average of Socket wall thickness.
-
Dimensional tolerances center to bottom of socket – (A)
NPS 1/2 and NPS 3/4 = +/- 1.5 mm
NPS 1 to NPS 2 = +/- 2 mm
NPS 2.1/2 to NPS 4 = +/- 2.5 mm
Socket weld Tee (SW Tee)
Socket Weld Cross (SW Cross)
The socket weld cross would also help to make a ninety degree branch from the main run of the pipe.
Dimensions of Socket Weld Tees & Crosses ASME B16.11
|
Class 3000 |
|||
| NPS | Socket Bore | Depth Socket | Bore dia |
| B | J | D | |
| 1/2 |
21.95 21.70 |
10 |
16.6 15 |
| 3/4 |
27.30 27.05 |
13 |
21.7 20.2 |
| 1 |
34.05 33.80 |
13 |
27.4 25.9 |
| 1.1/4 |
42.80 42.55 |
13 |
35.8 34.3 |
| 1.1/2 |
48.90 48.65 |
13 |
41.7 40.1 |
| 2 |
61.35 61.10 |
16 |
53.5 51.7 |
| 2.1/2 |
74.20 73.80 |
16 |
64.2 61.2 |
| 3 |
90.15 89.80 |
16 |
79.5 46.4 |
| 4 |
115.80 115.45 |
19 |
103.8 100.7 |
| NPS |
Socket WT |
Body WT |
Center to bottom of socket |
| C | G | A | |
| 1/2 |
4.65 4.10 |
3.75 | 15.5 |
| 3/4 |
4.90 4.25 |
3.90 | 19.5 |
| 1 |
5.70 5.00 |
4.55 | 22 |
| 1.1/4 |
6.05 5.30 |
4.85 | 27 |
| 1.1/2 |
6.35 5.55 |
5.10 | 32 |
| 2 |
6.95 6.05 |
5.55 | 38 |
| 2.1/2 |
8.75 7.65 |
7.00 | 41.5 |
| 3 |
9.50 8.30 |
7.60 | 57.5 |
| 4 |
10.70 9.35 |
8.55 | 66.5 |
|
Class 6000 |
|||
| NPS | Socket Bore | Depth Socket | Bore dia |
| B | J | D | |
| 1/2 |
21.95 21.70 |
10 |
12.5 11 |
| 3/4 |
27.30 27.05 |
13 |
16.3 14.8 |
| 1 |
34.05 33.80 |
13 |
21.5 19.9 |
| 1.1/4 |
42.80 42.55 |
13 |
30.2 28.7 |
| 1.1/2 |
48.90 48.65 |
13 |
34.7 33.2 |
| 2 |
61.35 61.10 |
16 |
43.6 42.1 |
| NPS |
Socket WT |
Body WT |
Center to bottom of socket |
| C | G | A | |
| 1/2 |
5.95 5.20 |
4.80 | 19.5 |
| 3/4 |
6.95 6.05 |
5.55 | 22.5 |
| 1 |
7.90 6.95 |
6.35 | 27 |
| 1.1/4 |
7.90 6.95 |
6.35 | 32 |
| 1.1/2 |
8.90 7.80 |
7.15 | 38 |
| 2 |
10.90 9.50 |
8.75 | 41 |
General notes..
- Dimensions are in millimeters unless otherwise indicated.
- Socket Bore (B) – Maximum and minimum dimensions.
- Bore Diameter (D) – Maximum and minimum dimensions.
- Socket wall thickness – (C) – Average of Socket wall thickness.
-
Dimensional tolerances center to bottom of socket – (A)
NPS 1/2 and NPS 3/4 = +/- 1.5 mm
NPS 1 to NPS 2 = +/- 2 mm
NPS 2.1/2 to NPS 4 = +/- 2.5 mm
Sockolet
Sockolet (sock + olet) is a typical type of socket weld pipe fittings, it is used for the same purposes as weldolet and threadolet, to weld a small diameter pipe to sit in a big diameter pipe body. Different that is sockolet has a unique socket that suitable for the welding (the socket is inside the olet). It provides a good 90 degree turn and higher strength for to take high pressures. One bore connected with the outlet bore, the counter bore will span the OD of the outlet to support the pipe sit on the socket, to stable the installation and welding strength. Same as socket pipe fittings, sockolets have pressure ranges in 3000#, 6000# and 9000#.
Dimensions of Sockolet ASME B16.11
Class 3000 Sockolet Dimensions
| Size in Inches | A | B | C | D | E | Weight in KG |
|---|---|---|---|---|---|---|
| 1/8 | 19.05 | 25.40 | 15.88 | 6.83 | 7.14 | 0.05 |
| 1/4 | 19.05 | 25.40 | 15.88 | 9.25 | 7.14 | 0.05 |
| 3/8 | 20.64 | 31.75 | 19.05 | 12.52 | 11.11 | 0.09 |
| 1/2 | 25.40 | 35.72 | 23.02 | 15.80 | 14.29 | 0.14 |
| 3/4 | 26.99 | 43.66 | 29.37 | 20.93 | 14.29 | 0.16 |
| 1 | 33.34 | 50.80 | 36.51 | 26.64 | 19.84 | 0.27 |
| 1 1/4 | 33.34 | 65.09 | 44.45 | 35.05 | 19.05 | 0.39 |
| 1 1/2 | 34.93 | 72.23 | 50.80 | 40.89 | 19.05 | 0.45 |
| 2 | 38.10 | 88.11 | 65.09 | 52.50 | 20.64 | 0.73 |
| 2 1/2 | 39.69 | 103.19 | 76.20 | 62.71 | 19.05 | 1.25 |
| 3 | 44.45 | 122.24 | 93.66 | 77.93 | 23.81 | 1.72 |
| 3 1/2 | 53.98 | 132.56 | 101.60 | 90.12 | 25.40 | 1.95 |
| 4 | 47.63 | 151.61 | 120.65 | 102.26 | 26.99 | 3.29 |
| 5 | 66.68 | 185.74 | 141.29 | 128.19 | 34.13 | 5.44 |
| 6 | 69.85 | 219.08 | 169.86 | 154.05 | 35.72 | 6.58 |
Class 6000 Sockolet Dimensions
| Size in Inches | A | B | C | D | E | Weight in KG |
|---|---|---|---|---|---|---|
| 1/2 | 31.75 | 43.66 | 19.05 | 11.84 | 22.23 | 0.23 |
| 3/4 | 36.51 | 49.61 | 25.40 | 15.60 | 22.23 | 0.36 |
| 1 | 39.69 | 61.91 | 33.34 | 20.70 | 23.81 | 0.59 |
| 1 1/4 | 41.28 | 69.06 | 38.10 | 29.46 | 20.64 | 0.73 |
| 1 1/2 | 42.86 | 82.55 | 49.21 | 33.99 | 22.23 | 0.91 |
| 2 | 52.39 | 102.39 | 69.85 | 42.90 | 30.16 | 2.34 |
Size on Size Class 3000 Dimensions
| Size in Inches | A | B | C | D | E | Weight in KG |
|---|---|---|---|---|---|---|
| 1/2 | 25.40 | 34.93 | 23.81 | 15.80 | 13.49 | 0.07 |
| 3/4 | 26.99 | 41.28 | 30.16 | 20.93 | 11.91 | 0.11 |
| 1 | 33.34 | 50.80 | 36.51 | 26.64 | 18.26 | 0.20 |
| 1 1/4 | 33.34 | 60.33 | 44.45 | 35.05 | 14.29 | 0.29 |
| 1 1/2 | 34.93 | 73.03 | 50.80 | 40.89 | 16.67 | 0.39 |
| 2 | 38.10 | 88.90 | 65.09 | 52.50 | 23.81 | 0.64 |
| 2 1/2 | 39.69 | 103.19 | 76.20 | 62.71 | 19.05 | 1.02 |
| 3 | 44.45 | 122.24 | 93.66 | 77.93 | 23.81 | 1.70 |
| 3 1/2 | 42.86 | 136.53 | 112.71 | 90.12 | 17.46 | 1.95 |
| 4 | 47.63 | 153.99 | 120.65 | 102.26 | 26.99 | 2.99 |
| 5 | 61.91 | 184.15 | 133.35 | 128.19 | 25.40 | 4.08 |
| 6 | 68.26 | 220.66 | 153.99 | 154.05 | 30.16 | 7.03 |
All Dimensions are in millimetre (mm)
Socket Weld Cap (SW Cap)
Dimensions of Socket Weld Cap ASME B16.11
| DN | Nom. | Socket | Bore Dia.Of Fitting | Socket Wall Thickness | Laying Lengths | Depth of | End Wall Thickness | ||||||||||
| Pipe | Bore | D | C | Coupling | Half | Socket | Min. | ||||||||||
| Size | Dia. | Class Designation | E | Coupling | Min. | K | |||||||||||
| B | Class Designation | 3000 | 6000 | 9000 | F | J | Class Designation | ||||||||||
| 3000 | 6000 | 9000 | Ave. | Min. | Ave. | Min. | Ave. | Min. | 3000 | 6000 | 9000 | ||||||
| 6 | 1/8″ | 10.8 | 6.9 | 4 | — | 3.18 | 3.18 | 3.96 | 3.43 | — | — | 6.5 | 16 | 9.5 | 4.8 | 6.4 | — |
| 8 | 1/4″ | 14.2 | 9.3 | 6.4 | — | 3.78 | 3.3 | 4.6 | 4.01 | — | — | 6.5 | 16 | 9.5 | 4.8 | 6.4 | — |
| 10 | 3/8″ | 17.6 | 12.6 | 9.2 | — | 4.01 | 3.5 | 5.03 | 4.37 | — | — | 6.5 | 17.5 | 9.5 | 4.8 | 6.4 | — |
| 15 | 1/2″ | 21.8 | 15.8 | 11.8 | 6.4 | 4.67 | 4.09 | 5.97 | 5.18 | 9.35 | 8.18 | 9.5 | 22.5 | 9.5 | 6.4 | 7.9 | 11.2 |
| 20 | 3/4″ | 27.2 | 21 | 15.6 | 11.1 | 4.9 | 4.27 | 6.96 | 6.04 | 9.78 | 8.56 | 9.5 | 24 | 12.5 | 6.4 | 7.9 | 12.7 |
| 25 | 1″ | 33.9 | 26.7 | 20.7 | 15.2 | 5.69 | 4.98 | 7.92 | 6.93 | 11.38 | 9.96 | 12.5 | 28.5 | 12.5 | 9.6 | 11.2 | 14.2 |
| 32 | 1-1/4″ | 42.7 | 35.1 | 29.5 | 22.8 | 6.07 | 5.28 | 7.92 | 6.93 | 12.14 | 10.62 | 12.5 | 30 | 12.5 | 9.6 | 11.2 | 14.2 |
| 40 | 1-1/2″ | 48.8 | 40.9 | 34 | 28 | 6.35 | 5.54 | 8.92 | 7.8 | 12.7 | 11.12 | 12.5 | 32 | 12.5 | 11.2 | 12.7 | 15.7 |
| 50 | 2″ | 61.2 | 52.5 | 42.9 | 38.2 | 6.93 | 6.04 | 10.92 | 9.5 | 13.84 | 12.12 | 19 | 41 | 16 | 12.7 | 15.7 | 19 |
| 65 | 2-1/2″ | 73.9 | 62.7 | — | — | 8.76 | 7.67 | — | — | — | — | 19 | 43 | 16 | 15.7 | 19 | — |
| 80 | 3″ | 89.8 | 78 | — | — | 9.52 | 8.3 | — | — | — | — | 19 | 44.5 | 16 | 19 | 22.4 | — |
| 100 | 4″ | 115.2 | 102.3 | — | — | 10.69 | 9.35 | — | — | — | — | 19 | 48 | 19 | 22.4 | 28.4 | — |
- Dimensions in Millimeters.
- Average of socket wall thickness around periphery shall be no less than listed values. The minimum values are permitted in localized areas.
- Reducer: C,J,E in accordance with large size.D in accordance with small size. The others in accordance with each size.
Socket Weld Flange – Another SW fittings
Socket weld flange (SW flange) generally used for the smaller pipes with high pressure. The flange shape is consist of a recessed shoulder at the inner bore, which leads the pipe to insert in the shoulder correctly, then do the welding work to connect the pipes and flanges. This welding structural essentially providing a smooth bore and a good transmission performances for the liquid in the pipelines.
SW flanges have a recessed shoulder on the inner diameter which allows the pipe to be fitted correctly. These fittings are typically used for small diameter pipes and can work at higher pressures, offering excellent flow characteristics. There are a number of different SW flange designs, including flat and raised face versions, each with their own pressure ratings.
Dimensions of Socket Weld Flanges ASME B16.5
Class 150 Socket Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Flange Length | RF Dia. | RF Height | Socket Depth | PCD | Socket Bore | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | J | |||||||||
| 1/2 | 15 | 90 | 9.6 | 30 | 14 | 34.9 | 2 | 10 | 60.3 | 22.2 | 4 | 1/2 | 50 | 55 | 5/8 | M14 | 0.8 |
| 3/4 | 20 | 100 | 11.2 | 38 | 14 | 42.9 | 2 | 11 | 69.9 | 27.7 | 4 | 1/2 | 50 | 65 | 5/8 | M14 | 0.9 |
| 1 | 25 | 110 | 12.7 | 49 | 16 | 50.8 | 2 | 13 | 79.4 | 34.5 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 0.9 |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 19 | 63.5 | 2 | 14 | 88.9 | 43.2 | 4 | 1/2 | 55 | 70 | 5/8 | M14 | 1.4 |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 21 | 73 | 2 | 16 | 98.4 | 49.5 | 4 | 1/2 | 65 | 70 | 5/8 | M14 | 1.4 |
| 2 | 50 | 150 | 17.5 | 78 | 24 | 92.1 | 2 | 17 | 120.7 | 61.9 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 2.3 |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 27 | 105 | 2 | 19 | 139.7 | 74.6 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 3.2 |
| 3 | 80 | 190 | 22.3 | 108 | 29 | 127 | 2 | 21 | 152.4 | 90.7 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 3.7 |
Class 300 Socket Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Flange Length | RF Dia. | RF Height | Socket Depth | PCD | Socket Bore | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | J | |||||||||
| 1/2 | 15 | 95 | 12.7 | 38 | 21 | 34.9 | 2 | 10 | 66.7 | 22.2 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 1.2 |
| 3/4 | 20 | 115 | 14.3 | 48 | 24 | 42.9 | 2 | 11 | 82.6 | 27.7 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.4 |
| 1 | 25 | 125 | 15.9 | 54 | 25 | 50.8 | 2 | 13 | 88.9 | 34.5 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.4 |
| 1 1/4 | 32 | 135 | 17.5 | 64 | 25 | 63.5 | 2 | 14 | 98.4 | 43.2 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 1.8 |
| 1 1/2 | 40 | 155 | 19.1 | 70 | 29 | 73 | 2 | 16 | 114.3 | 49.5 | 4 | 3/4 | 75 | 90 | 7/8 | M20 | 2.7 |
| 2 | 50 | 165 | 20.7 | 84 | 32 | 92.1 | 2 | 17 | 127 | 61.9 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 3.2 |
| 2 1/2 | 65 | 190 | 23.9 | 100 | 37 | 105 | 2 | 19 | 149.2 | 74.6 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 4.6 |
| 3 | 80 | 210 | 27 | 117 | 41 | 127 | 2 | 21 | 168.3 | 90.7 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 5.9 |
Class 600 Socket Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Flange Length | RF Dia. | RF Height | Socket Depth | PCD | Socket Bore | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | J | ||||||||
| 1/2 | 15 | 95 | 14.3 | 38 | 22 | 34.9 | 7 | 10 | 66.7 | 22.2 | 4 | 1/2 | 75 | 5/8 | M14 | 1.3 |
| 3/4 | 20 | 115 | 15.9 | 48 | 25 | 42.9 | 7 | 11 | 82.6 | 27.7 | 4 | 5/8 | 90 | 3/4 | M16 | 1.4 |
| 1 | 25 | 125 | 17.5 | 54 | 27 | 50.8 | 7 | 13 | 88.9 | 34.5 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 29 | 63.5 | 7 | 14 | 98.4 | 43.2 | 4 | 5/8 | 95 | 3/4 | M16 | 2.3 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 32 | 73 | 7 | 16 | 114.3 | 49.5 | 4 | 3/4 | 110 | 7/8 | M20 | 3.2 |
| 2 | 50 | 165 | 25.4 | 84 | 37 | 92.1 | 7 | 17 | 127 | 61.9 | 8 | 5/8 | 110 | 3/4 | M16 | 4.1 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 41 | 105 | 7 | 19 | 149.2 | 74.6 | 8 | 3/4 | 120 | 7/8 | M20 | 5.9 |
| 3 | 80 | 210 | 31.8 | 117 | 46 | 127 | 7 | 21 | 168.3 | 90.7 | 8 | 3/4 | 125 | 7/8 | M20 | 7.3 |
Class 1500 Socket Neck Flange Dimensions
| Size in Inch | Size in mm | Outer Dia. | Flange Thick. | Hub OD | Flange Length | RF Dia. | RF Height | Socket Depth | PCD | Socket Bore | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | J | ||||||||
| 1/2 | 15 | 120 | 22.3 | 38 | 32 | 34.9 | 7 | 10 | 82.6 | 22.2 | 4 | 3/4 | 110 | 7/8 | M20 | 1.8 |
| 3/4 | 20 | 130 | 25.4 | 44 | 35 | 42.9 | 7 | 11 | 88.9 | 27.7 | 4 | 3/4 | 115 | 7/8 | M20 | 2.3 |
| 1 | 25 | 150 | 28.6 | 52 | 41 | 50.8 | 7 | 13 | 101.6 | 34.5 | 4 | 7/8 | 125 | 1 | M24 | 3.7 |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 41 | 63.5 | 7 | 14 | 111.1 | 43.2 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 44 | 73 | 7 | 16 | 123.8 | 49.5 | 4 | 1 | 140 | 1 1/8 | M27 | 5.5 |
| 2 | 50 | 215 | 38.1 | 105 | 57 | 92.1 | 7 | 17 | 165.1 | 61.9 | 8 | 7/8 | 145 | 1 | M24 | 9.8 |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 64 | 105 | 7 | 19 | 190.5 | 74.6 | 8 | 1 | 160 | 1 1/8 | M27 | 16.4 |
| 3 | 80 | 265 | 47.7 | 133 | N/A | 127 | 7 | 203.2 | N/A | 8 | 1 1/8 | 180 | 1 1/4 | M30 | 21.8 |
Construction, Welding & Applications
Fig-1: a typical drawing of socket welding flange conforming to ASME B16.5 with raised face.
The socket welding flange conforming to ASME B16.5 is also a hubbed flange, which is generally constructed of a circular flange body and a tapered hub. The flange shall be manufactured as one piece and the taper shall not exceed 7 degrees. A socket structure of a certain depth shall be machined out in the bore. The diameter of socket (counterbore, dimension J as illustrated in Fig-1) shall be the same as that of the slip on flange of same size. Diameter of the smaller bore (dimension B) shall be equal to the nominal inside diameter of adjoining pipe or the bore diameter of welding neck flange of same size. The socket welding flange can be furnished with raised face (RF), flat face (FF), or ring type joint (RTJ).
Fig-2: illustration of the welding of a socket welding flange to a pipe.
Socket welding flange is welded to a pipe by a circumferential fillet weld, which joins the outside surface of the pipe and the hub of the flange. The fillet weld is a weld of an approximately triangular cross section joining two surfaces approximately at right angles to each other. The pipe is inserted into the socket of the flange first and alignment is relatively simple since the pipe fits into the socket readily. A 1/16″ (2.0 mm) gap shall be maintained prior to welding between the pipe end and the socket bottom of the flange. This gap is furnished to allow for differential thermal expansion of the mating elements. If there is no gap, when temperature increases, the thermal expansion difference between the pipe and the socket weld flange may result in cracking of the fillet weld. An internal weld is sometimes employed for added strength. By grinding the internal weld smooth, turbulence and flow restriction are kept to a minimum.
Socket welding flanges conforming to ASME B16.5 are permitted under the B31 series of Pressure Piping Codes and ASME Boiler and Pressure Vessel Codes. In piping engineering, although available in sizes up to 3″, they are most frequently used in sizes 2″ and smaller. Thus, socket welding flanges shall be applied for small diameter high-pressure piping systems. A significant disadvantage of socket welding is that the flange is susceptible to crevice corrosion. Corrosive solutions from the process fluid may accumulate in the gap and crevices formed between the outside surface of pipe and the socket surface of flange. This stagnant solution may lead to crevice corrosion. Hence socket welding flanges usually are not used in corrosive applications.
Dimensions & Tolerances of Socket Weld Flanges ASME B16.5
As illustrated in Fig-1, the dimension D: outside diameter of flange, K: diameter of bolt circle, G: diameter of raised face, B: smaller bore diameter of socket weld flange, J: diameter of socket (counterbore), X: diameter of hub at the large end of hub, E: depth of socket, n: number of bolt holes, d: diameter of bolt hole, Y: length through hub, T: minimum thickness of flange, t: height of raised face.
| Item | Condition | Tolerance |
|---|---|---|
| D | D ≤ 24″ | ±1.5 |
| D > 24″ | ±3.0 | |
| B | NPS ≤ 10 | ±1.0 |
| 12 ≤ NPS ≤ 18 | ±1.5 | |
| NPS ≥ 20 |
+3.0 -1.5 |
|
| J | 1∕2 ≤ NPS ≤3 | ±0.25 |
| K | NPS ≤ 24 | ±1.5 |
| G | 2 mm RF | ±1.0 |
| 7 mm RF | ±0.5 | |
| X | NPS ≤ 5 |
+2.0 -1.0 |
| NPS ≥ 6 |
+4.0 -1.0 |
|
| Y | NPS ≤ 10 | ±2.0 |
| NPS ≥ 12 | ±3.0 | |
| T | NPS ≤ 18 |
+3.0 -1.0 |
| NPS ≥ 20 |
+5.0 -0.0 |
|
| *BCC | NPS ≤ 2-1∕2 | 0.8 |
| NPS ≥ 3 | 1.5 | |
| *BHS | NPS ≤ 24 | ±0.8 |
- *BCC: bolt circle concentricity, which is the concentricity between the flange bolt circle diameter and machine facing diameters.
- *BHS: bolt hole spacing, also known as bolt hole to bolt hole, which is the center-to-center of adjacent bolt holes.
- *Unit of each tolerance: mm
Advantages and disadvantages of socket weld fittings
Advantages of Socket Weld Fittings
Socket welded fittings have a number of inherent advantages for joining pipes, including:
- Pipe sleeves can be easily aligned properly, which means there is no need to position the weld to align the pipe for welding;
- Socket weld fittings have a lower risk of leakage than socket weld fittings;
- Sleeve design means that weld metal does not flow into the pipe bore;
- Socket weld fittings are less expensive to install than butt weld fittings because they do not require special machining due to more lenient dimensional requirements.
Disadvantages of socket weld fittings
Socket weld fittings have areas of material build-up that are difficult to clean because the sleeve does not allow full penetration and there must be an expansion gap between the sleeve shoulder and the pipe.
Use of Socket Weld Pipe Fittings
As noted in the “Disadvantages” section above, some applications are not suitable for socket weld use, but the high pressure ratings of socket weld fittings mean they are well suited for a wide range of other industrial applications.
SW fittings can be used in pipelines to safely transport flammable, toxic or hazardous chemicals because of the lower risk of leakage compared to other joining techniques.
Creating a leak-free, permanent connection, SW fittings also allow for excellent flow characteristics. When manufactured to ASME and ASTM standard specifications, these fittings have met performance requirements including tolerances, pressure and temperature ratings, dimensions, materials and markings.
Socket welded fittings are classified by material type, such as alloy or carbon steel and stainless steel tubing. Different types of fittings are available for different applications, whether it is couplings, reducers, reducers and conventional socket weld tees, elbows or flanges, each with a different material type.
Since these fittings are known as high pressure fittings, they can be easily used in a variety of industrial processes.
Socket weld pipe fittings are not suitable for higher pressures and temperatures and for cyclic operation. Therefore, they are used in the following less critical low-voltage environments:
- Fire Fighting System
- Water distribution system
- Cooling systems
- Piping systems, etc.
Can you use X-rays to inspect socket welds?
X-rays can be used to inspect socket welds using a technique similar to radiographic flaw detection used in the medical industry.
Can you take radiographs of socket welds?
Radiographs can be taken of socket welds, and while this is not the ideal way to determine the quality of the weld, it will tell you if proper root clearance is present.
When to use socket weld fittings?
Socket weld fittings are best used for small diameter pipe with NPS 2 or less. They can be used to join small diameter pipe sections together using fillet weld connections to seal the pipe to the fittings.
Why use socket weld fittings?
Socket weld fittings are used for small diameter piping that carries flammable, toxic or expensive materials that are not allowed to leak. Socket weld fittings can also be used for steam at pressures of 300-600 psi. They can form high-strength joints with high flow characteristics and reduce the potential for leaks.
What is Tolerance for Socket Weld Pipe Fittings?
ASME B16.11 Dimensional Tolerances
Engineering Specifications for Socket Weld Fittings Manufactured Per ASME B16.11-2001.
|
DIMENSIONAL TOLERANCES PERMITTED UNDER THIS AMERICAN STANDARD ASME B16.11-2001 |
||
| “A” – CENTER TO BOTTOM OF SOCKET | FOR SIZES | ± 0.03″ |
| 1/8″ AND 1/4″ | ||
| 3/8″, 1/2″ AND 3/4″ | ± 0.06″ | |
| 1″, 1-1/4″, 1-1/2″ AND 2″ | ± 0.08″ | |
| 2-1/2″, 3″, AND 4″ | ± 0.10″ | |
| “B” – BORE DIAMETER OF SOCKET | FOR SIZES | + 0.020″ |
| 1-1/2″ AND SMALLER | – 0.000″ | |
| 2″, 2-1/2″, 3″ AND 4″ | + 0.025″ | |
| – 0.000″ | ||
| “C” – SOCKET WALL THICKNESS | MINIMUM = 1.09 T (BUT NOT LESS THAN 5/32″) | |
| T = WALL THICKNESS OF NOMINAL PIPE | ||
| “D” – BORE DIAMETER OF FITTING | FOR SIZES | ± 0.030″ |
| 2″ AND SMALLER | ||
| 2-1/2″, 3″ AND 4″ | ± 0.060″ | |
| “E” – BOTTOM TO BOTTOM OF SOCKETS – COUPLINGS | FOR SIZES | ± 0.06″ |
| 1/8″ AND 1/4″ | ||
| 3/8″, 1/2″ AND 3/4″ | ± 0.1 | |
