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Size: 24" (600NB/609.6mm)
Wall thickness: SCHXS (12.7mm)
Material: Grade.B
Length: 12M


Type: Grade B ERW PIPE
Material: Grade B

  • Outside diameter: 24″ (600NB/609.6mm)
  • Wall thickness: SCHXS (12.7mm)

Length: 12m (12,000mm)

What is an ERW steel pipe?

ERW steel pipe is the abbreviation of high-frequency resistance welded longitudinal pipe, which is produced by forming hot rolled or cold rolled coils through a forming machine, using the skin effect and proximity effect of high-frequency current to heat and melt the edges of the pipe billet, and then pressure welding under the action of the extrusion roller. The electric resistance welding process is usually large in diameter, which is also usable for large-diameter welded pipes. Generally, when a tube is made, a flat plate is rolled into a tube and welded. Cold forming of this process can increase the hardness of the steel by 20%, and high-frequency resistance welded pipe is typically used in applications above 3500 lbs.
High-frequency resistance welded steel pipe, also known as straight seam steel pipe, is combined with a pipe that can be divided into the typical pipe and thick wall pipe depending on the wall density. We can provide personalized wall thickness according to the customer’s special requirements with a wall thickness deviation of at most 0.25mm. The size of HF resistance welded steel pipe ranges from 1/2 inch to 32 inches. Our HF resistance welded steel pipe is strictly inspected and tested so that the welding quality, external dimensional accuracy, ellipticity, cut length, pipe end quality, wall density tolerance, packaging quality, etc., are in accordance with API5L, ASTM A53, GB/T9711.1 or GB/T3091 standards. Meanwhile, we can also make products according to customers’ requirements.
High-frequency resistance welded steel pipe is different from ordinary welded pipe welding process; the weld seam is melted from the parent material of the steel strip body, and the mechanical strength is better than the general welded pipe. The outer surface is bright and clean, with high precision, low cost, and a small residual height of the weld seam, which is favorable to the 3PE anti-corrosion coating cladding. The welding method of high-frequency welded steel pipe and submerged arc welded pipe is significantly different. As the welding is done instantly at high speed, the difficulty of ensuring the quality of welding is much higher than with the submerged arc welding method.
ERW pipe is an abbreviation for resistance welded steel pipe, and HFW pipe stands for high-frequency welded steel pipe. The pipe is made of steel coils with welded seams parallel to the pipe. It is one of the most versatile agricultural, industrial, and construction tools. The manufacturing process of ERW pipes includes HFW.ERW welding includes low, medium, and high-frequency welding, while HFW is particularly suitable for high-frequency resistance welding.

Characteristics of ERW welded pipes

ERW pipe is stronger compared to other forms of welded pipe.
Better performance than ordinary welded pipe and lower cost than seamless steel pipe.
The production process of ERW welded pipe is far safer than other welded pipes.

Types of ERW steel pipe, LSAW steel pipe, SSAW steel pipe

We can supply all kinds of welded pipes (ERW, LSAW, SSAW) and we constantly have a large stock of different kinds of welded pipes.

ERW (Electric resistance welding)

ERW pipes – Resistance welded pipes are made from hot rolled steel coils / sheets and have been processed through a process called cold roll forming. The distinct advantage of ERW steel pipes over seamless steel pipes is the uniform wall thickness. According to API standard or GB / T9711.1 standard, both ends of the steel pipe are beveled and the length can be fixed as required.
Structural parts and spare parts for the transmission of low pressure fluids (water, oil, gas and other liquids) for pressure and stress.
Standards and steel grades:

  • Piping: API 5L PSL1 / PSL2, GR.B-X70, GB / T 9711-1, GB / T9711-2, ISO 3138-1, ISO 3192-2
  • Structural piping:ASTM A53 GR.A / B / C, EN 10219, EN 10217, JIS G3444, AS 1163

LSAW (Longitudinal Submerged Arc Welding)

LSAW pipes are longitudinal submerged arc welded pipes made from hot rolled steel sheets or coils, LSAW pipes are always used for large welded pipes and cannot be manufactured by resistance welding technology (ERW).
Low-pressure fluids (water, oil, gas and other liquids) transfer of stress structural support in industrial structures (bridge construction, piling, billboard support, etc.).
Standards and steel grades:
Pipe: API 5L PSL1 / PSL2, GR.B / X42 / X46 / X52 / X56 / X60 / X65 / X70
Low pressure fluid transportation pipe: GB / T3019 Q195 / Q215 / Q235 / Q275 / Q295 / Q345 / IS 3589 Fe330 / Fe410 / Fe450

Structural pipe:

  • EN10219 S235JRH / S275JOH / S275J2H / S355JOH / S355J2H
  • EN10217, ASTM A53 GR.A/B/C, ASTM A252 GR.1/2/3
  • ASTM A572 GR.42/50/55/60/65,JIS A5525 SKK400/SKK490

SSAW (Spiral Submerged Arc Welding)

Spiral submerged arc welding (SSAW) is its forward direction, and the forming angle (adjustable) with the forming tube centerline hose reel, side forming edge welding and welding them into a spiral shape.
SSAW pipe is made of hot rolled coil steel at normal atmospheric temperature by automatic submerged arc welding.
These pipes are mainly used in the oil and gas industry for the transport of flammable and non-flammable liquids and steel construction.
Standards and Steel Grades:
Pipeline: API 5L PSL1 / PSL2, GR.B / X42 / X46 / X52 / X56 / X60 / X65 / X70

Structural pipes:

  • ASTM A53 GR.A / B / C, ASTM A252 GR.1 / 2/3, EN 10219 S275, S275JR
  • EN 10217 S355JR / S355JOH / S355J2H
  • JIS A5525 SKK400 / SKK490, BS 4360 GR.43 / 50, AWWAC200

ASTM A53 Grade B ERW structural steel Pipe Equivalent

K03005 SPPS42 STPG410 St45/St42-2/ST37 1629 /1626 1.0408/1.0040

Chemical Composition, % for ASTM A53 Grade B ERW Pipe

Element Type S (Seamless) Type E (Electric-resistance welded) Type F (Furnace- welded pipe)
Grade A Grade B Grade A Grade B Grade A
Carbon max. % 0.25 0.3 0.25 0.3 0.3
Manganese % 0.95 1.2 0.95 1.2 1.2
Phosphorous, max. % 0.05 0.05 0.05 0.05 0.05
Sulfur, max. % 0.045 0.045 0.045 0.045 0.045
Copper, max.% 0.4 0.4 0.4 0.4 0.4
Nickel, max. % 0.4 0.4 0.4 0.4 0.4
Chromium, max. % 0.4 0.4 0.4 0.4 0.4
Molybdenum, max. % 0.15 0.15 0.15 0.15 0.15
Vanadium, max. % 0.08 0.08 0.08 0.08 0.08

Chemical compersition of API 5L PSL1 /PSL2 ERW steel pipe

Standard Class Grade Chemical Analysis(%) Mechanical Prop
C Mn P S Tensile Strength (Mpa) Yield Strength (Mpa)
API 5L PSL1 B 0.26 1.2 0.03 0.03 ≥415 ≥245
X42 0.26 1.3 0.03 0.03 ≥415 ≥290
X46 0.26 1.4 0.03 0.03 ≥435 ≥320
X52 0.26 1.4 0.03 0.03 ≥460 ≥360
X56 0.26 1.4 0.03 0.03 ≥490 ≥390
X60 0.26 1.4 0.03 0.03 ≥520 ≥415
X65 0.26 1.45 0.03 0.03 ≥535 ≥450
X70 0.26 1.65 0.03 0.03 ≥570 ≥485
PSL2 B 0.22 1.2 0.025 0.015 415-655 245-450
X42 0.22 1.3 0.025 0.015 415-655 290-495
X46 0.22 1.4 0.025 0.015 435-655 320-525
X52 0.22 1.4 0.025 0.015 460-760 360-530
X56 0.22 1.4 0.025 0.015 490-760 390-545
X60 0.22 1.4 0.025 0.015 520-760 415-565
X65 0.22 1.45 0.025 0.015 535-760 450-600
X70 0.22 1.65 0.025 0.015 570-760 485-635
X80 0.22 1.85 0.025 0.015 625-825 555-705

Mechanical Properties of ASTM A53 Grade B ERW Steel Pipe

Grade Tensile Strength (Mpa) Yield Strength (Mpa) Elongation Delivery Condition
A ≥330 ≥205 20 Annealed
B ≥415 ≥240 20 Annealed

The production process of ERW steel pipe

20230511232238 98742 - ASTM API5L/A53 Grade B ERW PIPE 600NB SCHXS BE

The production process of ERW (Electric Resistance Welded) steel pipe is a complex process that involves various stages. The following is a brief overview of each stage:

Steel-making in Converter → Refine → Continuous Casting → Hot Rolling → Uncoiling → Accumulator → Cross Welding → Strip End Shear → Strip Leveling → Edge Milling →Strip UT → Forming → Electric Resistance Welding → Sizing →  Air Cooling+ Water Cooling → Online Weld Seam Heat Treatment →  Online Weld SEAM UT → Beveling → Hydro-static Testing → Weld Seam UT → Pipe UT →  Appearance and Dimension Check → Coating →  Marking →  Length-measuring and weighing → Packing → Transportation

  • Steel-making in Converter: The first stage involves the production of steel from raw materials such as iron ore, coal, and limestone. This is done in a converter, where the raw materials are heated and melted to produce liquid steel.

  • Refine: The liquid steel is then refined to remove impurities such as sulfur, phosphorus, and carbon.

  • Continuous Casting: The refined steel is then poured into a continuous casting machine, where it is shaped into slabs or billets.

  • Hot Rolling: The slabs or billets are then heated and passed through a series of rollers to produce hot-rolled strips.

  • Uncoiling: The hot-rolled strips are then uncoiled and passed through an accumulator, which stores the strips to ensure a continuous supply to the next stage.

  • Cross Welding: The strips are then fed into a cross-welding machine, where they are joined together to form a continuous strip.

  • Strip End Shear: The continuous strip is then cut at both ends to remove any irregularities or deformations.

  • Strip Leveling: The strip is then leveled to ensure uniform thickness and a smooth surface.

  • Edge Milling: The edges of the strip are then milled to ensure straightness and a uniform width.

  • Strip UT: The strip is then inspected using ultrasonic testing to detect any defects.

  • Forming: The strip is then passed through a series of rollers to form it into a circular shape.

  • Electric Resistance Welding: The circular strip is then welded using an electric resistance welding process.

  • Sizing: The welded pipe is then passed through a series of sizing rollers to achieve the desired diameter and wall thickness.

  • Air Cooling+ Water Cooling: The pipe is then cooled using a combination of air and water to ensure uniform cooling and prevent deformation.

  • Online Weld Seam Heat Treatment: The pipe is then subjected to heat treatment to improve its mechanical properties.

  • Online Weld SEAM UT: The welded seam of the pipe is inspected using ultrasonic testing to detect any defects.

  • Beveling: The ends of the pipe are then beveled to facilitate welding.

  • Hydro-static Testing: The pipe is then subjected to hydrostatic testing to ensure it can withstand the intended pressure.

  • Weld Seam UT: The welded seam of the pipe is inspected again using ultrasonic testing to detect any defects.

  • Pipe UT: The entire pipe is then inspected using ultrasonic testing to detect any defects.

  • Appearance and Dimension Check: The pipe is then visually inspected and measured to ensure it meets the required standards.

  • Coating: The pipe is then coated with a protective layer to prevent corrosion (fusion epoxy paint, coal tar epoxy, 3PE, varnish paint, asphalt paint, black oil paint (according to customer requirements)).

  • Marking: The pipe is then marked with relevant information such as the grade, size, and manufacturer.

  • Length-measuring and weighing: The pipe is then measured and weighed to ensure it meets the required specifications.

  • Packing: The pipe is then packed and prepared for transportation.

  • Transportation: The finished ERW steel pipe is then transported to the desired location for use.

ERW steel pipe end and pipe outer surface processing

  • Pipe ends: 30-35° bevel, flush, socket, threaded.

  • External treatment: black paint, varnish, anticorrosive paint, epoxy coal leach clear winding glass wire cloth, 3PE, FBE, 3PP, etc.

  • Internal treatment: epoxy resin, IPN8710, water-set mortar, etc.

Testing of ERW welded pipes

  • 1. The specimens and tests required by this specification shall comply with the tests described in the latest issue of “Test Methods and Definitions” A370.

  • 2. The longitudinal tensile specimen should be taken from the end of the pipeline. For continuously welded pipelines, it should be allowed to be taken from the skeleton at a distance of about 90 ° from the weld seam and should not flatten between gauge marks. The side of each sample should be parallel to the measurement mark. Tension testing can be conducted on the entire pipeline when the sample cannot be pulled.

  • 3. The transverse weld sample of resistance welded pipe should be sampled together with the weld seam in the center of the sample. All transverse specimens are approximately 11.2 inches. A specification length of [40 millimeters] wide should represent the pipe wall thickness from which the sample is cut.

  • 4. The specimens for bending and flattening tests should be taken from the pipeline. The sample used for the flattening test should have smooth ends and no burrs.

  • 5. All specimens should be tested at room temperature.

Applications of ERW pipes

Load-bearing piles: Deep foundations are required when shallow soils are insufficient to support the structural loads. Pipe piles are often used for deep foundations and transfer loads from buildings to stronger underground soil layers. Loads are resisted by surface friction and point supports. Pipes can be driven with spikes or flat plates and opened or closed. If piles are driven with steel plates, the pipes can be filled with concrete to increase the strength of the piles. Often, the money spent on plate, steel, and concrete is best spent on larger, thicker piles. Pipe piles range from a few inches to several feet and can be easily spliced into hundreds of feet long.
Combination Walls: Large diameter pipe has high bending strength and is often used in combination sheet pile walls. The combination of large-diameter pipe piles and sheet piles, often referred to as a combination wall, pipe -z wall, or main pile wall, forms a very effective system. As with other combination walls, the main pile carries most of the load, while the sheet pile transfers the load to the pipe and soil.
Structural Section: The symmetry of the pipe gives it the same bending strength in any direction, which makes it excellent for flexural resistance. The stress required to make the axial member bend decreases as the length increases. The radius of rotation has the opposite effect and increases the section’s ability to resist buckling. For the X and Y axes, the W and HP sections have different radii of gyration (rx and ry) while remaining constant for the pipe. The result is that the pipe can withstand higher loads for long, unsupported lengths.
Threaded micropile casing: Micropiles are smaller diameter bored piles where the majority of the applied load is resisted by reinforcement. They are constructed by drilling a hole, usually using a casing, then placing reinforcing steel and grouting the hole. Micropiles have many uses and are becoming a more mainstream method for supporting and re-supporting foundations, seismic retrofitting, slope stabilization, and retaining soils. Micropiles are ideal for piles on complex sites that require low vibration or noise levels or are difficult to access, such as low clearances and boreholes.
Marker poles, towers, and transmission lines: Marker poles and towers are designed to resist larger bending loads at the structure’s base. The availability of large-diameter pipe and various thicknesses allows designers to select the exact size needed to handle a specific project. The pipe is also available in long lengths, easy to splice, and easy to drill into hard ground. Reducing collars allow for easy splicing of different diameters, making the design as efficient as possible.
Mining: Mining operations take place in hazardous conditions away from the surface. Personnel, equipment, and air shafts are all integral parts of the mine. Vertical pipe sections are often used to construct shafts. The large range of diameters and thicknesses makes steel pipe the material of choice for various shaft requirements. Some shafts are hundreds if not thousands of feet long, and pipe can be supplied in sections with the ends ready to be spliced. Support rings can be used to keep pipe thicknesses to a minimum.

Steel pipe wall thickness (ASME B36.10 & B36.19)

Nominal Pipe Size Outside diameter Wall thickness
1/8″ 10.29 1.24 1.73 2.41
1/4″ 13.72 1.65 2.24 3.02
3/8″ 17.15 1.65 2.31 3.2
1/2″ 21.34 1.65 2.11 2.77 3.73 4.75 7.47
 3/4″ 26.67 1.65 2.11 2.87 3.91 5.54 7.82
1″ 33.4 1.65 2.77 3.38 4.55 6.35 9.09
1 1/4″ 42.16 1.65 2.77 3.56 4.85 6.35 9.7
1 1/2″ 48.26 1.65 2.77 3.68 5.08 7.14 10.16
2″ 60.33 1.65 2.77 3.91 5.54 8.71 11.07
2 1/2″ 73.03 2.11 3.05 5.16 7.01 9.53 14.02
3″ 88.9 2.11 3.05 5.49 7.62 11.13 15.24
3 1/2″ 101.6 2.11 3.05 5.74 8.08 16.15
4″ 114.3 2.11 3.05 6.02 8.56 13.49 17.12
5″ 141.3 2.77 3.4 6.55 9.53 15.88 19.05
6″ 168.28 2.77 3.4 7.11 10.97 18.24 21.95
8″ 219.08 2.77 3.76 8.18 12.7 23.01 22.23
10″ 273.05 3.4 4.19 9.27 12.7 28.58 25.4
12″ 323.85 3.96 4.57 9.53 12.7 33.32 25.4
14″ 355.6 3.96 4.78 9.53 12.7 35.71
16″ 406.4 4.19 4.78 9.53 12.7 40.46
18″ 457.2 4.19 4.78 9.53 12.7 45.24
20″ 508 4.78 5.54 9.53 12.7 49.99
22″ 558.8 4.78 5.54 9.53 12.7 53.97
24″ 609.6 5.54 6.35 9.53 12.7 59.51
The dimensions are in millimeters
Sources: ASME B36.19, ASME B36.10

Pipes Diameter Tolerance

PIPE NPS/ DN/ OD Allowed Outside Diameter Tolerance
Over Under
inches mm inches mm
NPS 1/8 to 1½ 1/64 0.4 1/64 0.4
DN 6 to 40
OD 10.3 to 48.3, mm
Over 1½ to 4 1/32 0.8 1/32 0.8
DN 40 to 100
OD 48.3 to 114.3 mm
Over 4 to 8 1/16 1.6 1/32 0.8
DN 100 to 200
OD 114.3 to 219.1 mm
Over 8 to 18 3/32 2.4 1/32 0.8
DN 200 to 450
OD 219.1 to 457 mm
Over 18 to 26 1/8 3.2 1/32 0.8
DN 450 to 650
OD 457 to 660 mm

Pipes Thickness Tolerance

PIPE NPS/ DN/ OD Tolerance, % from Nominal
Over Under
NPS 1/8 to 2½, all t/D ratios 20 12.5
DN 6 to 65
OD 10.3 to 73.0, mm
NPS 3 to 18, t/D up to 5% 22.5 12.5
DN 80 to 450
OD 88.9 to 457 mm
NPS 3 to 18, t/D > 5% 15 12.5
DN 80 to 450
OD 88.9 to 457 mm
NPS 20 and larger, welded, all t/D ratios 17.5 12.5
DN 500
OD 508 mm
NPS 20 and larger, seamless, t/D up to 5% 22.5 12.5
DN 500
OD 508 mm
NPS 20 and larger, seamless, t/D > 5% 15 12
DN 500
OD 508 mm

Pipes Weight Tolerance

  • The pipes’ weight tolerance depends on the nominal pipe size, as listed below:
  • Pipe of NPS 4 (DN100, 114.3mm) and smaller may be weighed in convenient lots; pipe in sizes larger than NPS 4 shall be weighed separately.
  • Pipes NPS 12 (DN300, 323.8mm) and under, weight tolerance is: -3.5% / +10%.
  • Pipes over NPS 12 (DN300, 323.8mm),weight tolerance is: -5% / +10%.

Pipes Quantity Tolerance

  • Should be within -10% to +10% tolerance, as a rule of thumb (-3/+3% should be acceptable).

Pipes Length Tolerance

  • Seamless and Welded (no filler metal added): if cut lengths are ordered, no length of pipe shall be under the length specified and not more than 1/4 in. (6.35 mm) over that specified.
  • Forged and Bored, Cast, and Cast Cold-Wrought: if definite cut lengths are ordered, no length of pipe shall be under the length specified and not more than 1/8 in. (3.2 mm) over that specified.
  • For pipe ordered to random lengths, the lengths and variations shall be agreed upon between the manufacturer and the buyer.

NPS to DN Conversion Chart

The table shows the conversion between NPS and the pipe outside diameter in inches, mm and DN (nominal diameter):

PIPE NPS Pipe outside diameter PIpe outside diameter NPS to DN
in inches in mm conversion
1/8 0.404 10.26 6
1/4 0.54 13.72 8
3/8 0.675 17.15 10
1/2 0.84 21.34 15
¾ 1.05 26.67 20
1 1.315 33.4 25
1 ¼ 1.66 42.16 32
1 ½ 1.9 48.26 40
2 2.375 60.33 50
2 ½ 2.875 73.03 65
3 3.5 88.9 80
3 ½ 4 101.6 90
4 4.5 114.3 100
4 ½ 5 127 115
5 5.563 141.3 125
6 6.625 168.28 150
7 7.625 193.68
8 8.625 219.08 200
10 10.75 273.05 250
12 12.75 323.85 300
14 14 355.6 350
16 16 406.4 400
18 18 457.2 450
20 20 508 500
22 22 558.8 550
24 24 609.6 600
26 26 660.4 650
28 28 711.2 700
30 30 762 750
32 32 812.8 800
34 34 863.6 850
36 36 914.4 900
38 38 965.2 950
40 40 1016 1000
42 42 1066.8 1050
44 44 1117.6 1100
46 46 1168.4 1150
48 48 1219.2 120

EFW pipes VS ERW pipes

  • ERW pipe: Resistance welded pipe

  • HFW pipe: high-frequency welded pipe

Electrofusion welding (EFW pipe) refers to electron beam welding, which uses high-speed motion to convert the kinetic energy of the electron beam-directed impact into heat to heat the workpiece, causing it to leave the melt and form a weld seam.
It is mainly used for welding dissimilar steel, thin plates, or high-power density metal weldments that can be rapidly heated to high temperatures and melt refractory metals and alloys. Deep fusion welding is fast and has a very small heat-affected zone, so it has very little effect on the performance of the joint, and the joint has almost no deformation. However, special welding chambers are required since welding is performed using X-rays.
Resistance welding (ERW steel pipe): The combination of welded members is made by applying pressure through electrodes and using electric current through the joint area of the contact surface and the adjacent heat-generating resistance welding process method, also known as contact welding. It has excellent toughness and dynamic load strength, welding deformation.
Three commonly used types are spot, seam, and butt welding.
The manufacturing process of ERW pipe includes HFW.
ERW has low, medium, and high-frequency welding processes, while HFW is particularly suitable for high-frequency resistance welding.
The difference between ERW and HFW pipes is that EFW is an ERW process for normal and thin wall-thickness pipes.


ASTM A106 and ASTM A53 are both carbon steel pipe specifications commonly used in various industries. While they share similarities, there are some differences between the two.

ASTM A106 pipes are seamless pipes. On the other hand, ASTM A53 pipes can be seamless or welded.
As per chemical analysis, A106 has silicon in its chemical composition. ASTM A53 pipes do not have silicon in their composition.
A106 pipes are generally costlier than A53 pipes. A53 pipes are usually cheaper than A106 pipes.
A106 pipes are usually used for high-temperature pressure applications. A53 pipes are usually not applied for high-temperature applications.

Difference between A106 and SA106

Material Standards:

  • ASTM A106: This specification is issued by ASTM (American Society for Testing and Materials). It uses the callout “A” for the pipe materials.

  • ASTM A53: This specification is also issued by ASTM. Similar to A106, it uses the callout “A” for the pipe materials.

ASME Standard:
ASTM A106: The ASME (American Society of Mechanical Engineers) standard refers to A106 as SA106. The “SA” callout is used for pipe materials in ASME standards. However, in terms of material composition and properties, there is no difference between A106 and SA106.
Killed Carbon Steel:
ASTM A106: All three grades of ASTM A106 (A, B, and C) are killed carbon steel. “Killed” refers to the process of deoxidizing the steel during its production to improve its uniformity and eliminate the presence of unwanted gases.

Difference between A106-Gr. B and A333-Gr. 6

  • A106 Gr. B: It is a carbon steel material commonly used for high-temperature and high-pressure applications. A106 Gr. B pipes are typically seamless.

  • A333 Gr. 6: It is a low-temperature carbon steel (LTCS) material designed for low-temperature applications. A333 Gr. 6 pipes can be either seamless or welded.

Temperature Range:

  • A106 Gr. B: The temperature limit for A106 Gr. B pipes without impact testing and stress ratio checking is -28.9°C (for thickness up to 12.7 mm) according to ASME B31.3.

  • A333 Gr. 6: A333 Gr. 6 material is suitable for use in low-temperature environments down to -46°C (Table A-1M).

In summary, ASTM A106 and ASTM A53 have similar material composition and properties, with the main difference being in the material standards used. ASTM A106 and SA106 are equivalent, while A333 Gr. 6 is a low-temperature carbon steel material designed for different temperature ranges compared to A106 Gr. B. Additionally, A106 pipes are typically seamless, whereas A333 Gr. 6 pipes can be seamless or welded.

China Grade B ERW Pipe Manufacturer offers ASTM API5L/A53 GR.B ERW PIPE 600NB SCHXS BE.

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