EN Flange Standard

What is EN 1092-1 flange standard?

EN 1092-1 flange standard: Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated- steel flanges.

European standard EN 1092-1 – concerning flanges for pipes – establishes the requirements for steel flanges based on their nominal pressure (PN) and dimension (DN).

Moreover, it defines the different kinds of flanges and their sealing surfaces, tolerances, threading and labelling.

What are the differences among the different kinds of flanges?

We will present the different types of EN 1092-1 flanges and describe their special characteristics.
Each classification is labeled with the letters EN 1092-1, the reference standard, followed by two digits indicating the flange construction, and a letter indicating the type of flange sealing surface.
The label on the side of each flange type includes not only the letters EN 1092-1 TYPE___, but also PN, DN and casting information for the raw material used to manufacture the flange.
The first and most widespread is the EN 1092-1 Type 01A flat weld flange. As mentioned earlier, the label of the flange provides a great deal of information: EN 1092-1 indicates the reference standard, type 01 indicates that it is a welded flange, and a indicates a flat sealing surface. This flange is used to connect pipes and is welded by lap welding. Then, the connection is made with bolts.
The second type of flange is also a flat weld flange (type 01), but they have a different sealing surface than the previous type because they have a convex face (B). EN 1092-1 Type 01B convex face flanges have a low relief ring around the center hole of the flange, which is useful for checking the position of the gasket. They are welded by lap welding and connected by bolting.
The third type of flange in our catalog is the EN 1092-1 Type 02A lap joint flange. Their label can be easily broken down to EN 1092-1 (reference standard) Type 02 (lap joint flange) A (flat sealing face). They are loose flanges connected by welded rings; bolts are used for the connection.
The fourth type of EN 1092-1 flange we have in stock is the flat (A) blind flange (type 05.) The EN 1092-1 type 05A blind flange is used as a pipe end cap together with a flat weld flange, a convex face flange or a collar.
The fifth type is a butt-weld flange (type 11) with a convex (B) face. The type of weld used is butt weld.
The sixth type of EN 1092-1 flange you can find in our inventory identifies threaded flanges with convex face (B) (TYPE 13). They have a female thread for connection to the male threaded end.
The last one, EN 1092-1 TYPE 33, identifies the dimensions of the welded ring to be used in combination with EN 1092-1 TYPE02A loose-fitting flanges or DIN 2642 pressed stainless steel flanges.
In addition, additional EN 1092-1 types are available from Assembly Services upon request. See the table below for our full range of EN 1092-1 flanges.

EN 1092-1: figure 1 (flange types)
Drawn (source: EN 1092-1)	TYPE __	Full description
	EN 1092-1 TYPE 01	Plate flange for welding
	EN 1092-1 TYPE 02	Loose plate flange with weld-on plate collar TYPE 32
	EN 1092-1 TYPE 02	Loose plate flange with weld-on plate collar TYPE 33
	EN 1092-1 TYPE 04	Loose plate flange with weld-neck collar TYPE 34
	EN 1092-1 TYPE 05	Blind flange or blank flange
	EN 1092-1 TYPE 11	Weld-neck flange
	EN 1092-1 TYPE 12	Hubbed slip-on flange for welding
	EN 1092-1 TYPE 13	Hubbed threaded flange
	EN 1092-1 TYPE 21	LWN – long welding-neck flange or integral flange

 

EN 1092-1: figure 2 (ancillary components)
Drawn (source: EN 1092-1)	TYPE __	Full description
	EN 1092-1 TYPE 32	Weld-on collar plate
	EN 1092-1 TYPE 33	Short collar or lapped pipe end
	EN 1092-1 TYPE 34	Weld-neck collar

from: fittingservice.it

Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated – Part 1: Steel flanges

This European standard specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000. This standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange face surface finish, marking, materials, pressure/ temperature ratings and flange masses.

Flange facing types according to DIN EN 1092-1

Flange facing dimensions

units [mm] DN PN f1 f2 f3 f4 w x y z α R 2.5 6 10 16 25 40 63 100 160 250 320 400 d1 10 35 35 40 40 40 40 40 40 40 40 40 40 2 4.5 4 2 24 34 35 23 – 2.5 15 40 40 45 45 45 45 45 45 45 45 45 45 29 39 40 28 – 20 50 50 58 58 58 58 58 58 58 58 58 58 36 50 51 35 41� 25 60 60 68 68 68 68 68 68 68 68 68 68 43 57 58 42 32 70 70 78 78 78 78 78 78 78 78 78 78 51 65 66 50 40 80 80 88 88 88 88 88 88 88 88 88 88 3 61 75 76 60 50 90 90 102 102 102 102 102 102 102 102 102 102 73 87 88 72 65 110 110 122 122 122 122 122 122 122 122 122 122 95 109 110 94 80 128 128 138 138 138 138 138 138 138 138 138 138 106 120 121 105 100 148 148 158 158 162 162 162 162 162 162 162 162 5 4.5 2.5 129 149 150 128 32� 3 125 178 178 188 188 188 188 188 188 188 188 188 188 155 175 176 154 150 202 202 212 212 218 218 218 218 218 218 218 218 183 203 204 182 200 258 258 268 268 278 285 285 285 285 285 285 285 239 259 260 238 250 312 312 320 320 335 345 345 345 345 345 345 – 292 312 313 291 300 365 365 370 378 395 410 410 410 410 – – – 4 343 363 364 342 350 415 415 430 438 450 465 465 465 – – – – 5.5 5 3 395 421 422 394 27� 3.5 400 465 465 482 490 505 535 535 535 – – – – 447 473 474 446 450 520 520 532 550 555 560 560 560 – – – – 497 523 524 496 500 570 570 585 610 615 615 615 615 – – – – 349 375 376 548 600 670 670 685 725 720 735 735 – – – – – 5 649 675 676 648 700 775 775 800 795 820 840 840 – – – – – 751 777 778 750 800 880 880 905 900 930 960 960 – – – – – 856 882 883 855 900 980 980 1005 1000 1030 1070 1070 – – – – – 961 987 988 960 1000 1080 1080 1110 115 1140 1180 1180 – – – – – 6.5 6 4 1062 1092 1094 1060 28� 4 1200 1280 1295 1330 1330 1350 1380 1380 – – – – – 1262 1292 1294 1260 1400 1480 1510 1535 1530 1560 1600 – – – – – – 1462 1492 1494 1460 1600 1690 1710 1760 1750 1780 1815 – – – – – – 1662 1692 1694 1660 1800 1890 1920 1960 1950 1985 – – – – – – – 1862 1892 1894 1860 2000 2090 2125 2170 2150 – – – – – – – – 2062 2092 2094 2060 2200 2295 2335 2370 – – – – – – – – – – – – – – – – – – 2400 2495 2545 2570 – – – – – – – – – – – – – – – – – – 2600 2695 2750 2780 – – – – – – – – – – – – – – – – – – 2800 2910 2960 2000 – – – – – – – – – – – – – – – – – 3000 3110 3160 3210 – – – – – – – – – – – – – – – – – – 3200 3310 3370 – – – – – – – – – – – – – – – – – – – 3400 3510 3580 – – – – – – – – – – – – – – – – – – – 3600 3720 3790 – – – – – – – – – – – – – – – – – – – 3800 3920 – – – – – – – – – – – – – – – – – – – – 4000 4120 – – – – – – – – – – – – – – – – – – – – Flange facing types C, D, E, F, G and H are not used for PN 2,5 and PN 6. Flange facing types G and H are only used for PN 10 to PN 40. Types of flanges (typ) up to DIN EN 1092-1 Typ 01: Plate (slip-on) flanges for welding Typ 13: Hubbed threaded flanges Typ 02: Loose plate flanges with weld-on plate collar Typ 21: Integral flanges Typ 04: Loose plate flanges with weld-neck collar Typ 32: Weld-on plate collars Typ 05: Blank (blind) flanges Typ 33: Lapped pipe ends Typ 11: Weld-neck flanges Typ 34: Weld-neck collars Typ 12: Hubbed slip-on flanges for welding   D: Outside Diameter K: Diameter of Bolt Circle L: Diameter of Bolt Hole A: Outside Diameter of Neck E: Chamfer F: Collar thickness G max: Diameter of Shoulders R: Corner Radius N: Neck Diameter S: Neck Thickness (Preferred value)

DIN EN 1092-1 Flange PN 2.5

DN	Mating dimensions					A	Bore		Flange			F				Gmax	Length
	D	K	L	Bolting			Diameter		thickness
				No	Size		B1	B2	C1*	C2	C4						H2	H3	H4		H5
										C3
	Flange type
	01, 02, 05, 11, 21					11, 21	1	2	1	11	5	32	35	36	37	5	11	11	35	36	37
						35-37	32		2	21
10	75	50	11	4	M10	17.2	18	21	12	12	12	10	5	2	2.5	–	28	6	28	35	7
15	80	55	11	4	M10	21.3	22	25	12	12	12	10	5	2	2.5	–	30	6	30	38	7
20	90	65	11	4	M10	26.9	27.5	31	14	14	14	10	6	2.5	3	–	32	6	32	40	8
25	100	75	11	4	M10	33.7	34.5	38	14	14	14	10	7	2.5	3	–	35	6	35	40	10
32	120	90	14	4	M12	42.4	43.5	46	16	14	14	10	8	3	3	–	35	6	35	42	12
40	130	100	14	4	M12	48.3	49.5	53	16	14	14	10	8	3	3	–	38	7	38	45	15
50	140	110	14	4	M12	60.3	61.5	65	16	14	14	12	8	3	3	–	38	8	38	45	20
65	160	130	14	4	M12	76.1	77.5	81	16	14	14	12	8	3	3	55	38	9	38	45	20
80	190	150	18	4	M16	88.9	90.5	94	18	16	16	12	10	3	4	70	42	10	42	50	25
100	210	170	18	4	M16	114.3	116	120	18	16	16	14	10	4	4	90	45	10	45	52	25
125	240	200	18	8	M16	139.7	141.5	145	20	18	18	14	10	4	4	115	48	10	48	55	25
150	265	225	18	8	M16	168.3	170.5	174	20	18	18	14	10	5	4	140	48	12	48	55	25
200	320	280	18	8	M16	219.1	221.5	226	22	20	20	16	11	5	5	190	55	15	55	62	30
250	375	335	18	12	M16	273	276.5	281	24	22	22	18	12	8	–	235	60	15	60	68	–
300	440	395	22	12	M20	323.9	327.5	333	24	22	22	18	12	8	–	285	62	15	62	68	–
350	490	445	22	12	M20	355.6	359.5	365	26	22	22	18	13	8	–	330	62	15	62	68	–
400	540	495	22	16	M20	406.4	411	416	28	22	22	20	14	8	–	380	65	15	65	72	–
450	595	550	22	16	M20	457	462	467	30	22	24	20	15	8	–	425	65	15	65	72	–
500	645	600	22	20	M20	508	513.5	519	30	24	24	22	16	8	–	475	68	15	68	75	–
600	755	705	26	20	M24	610	616.5	622	32	30	30	22	16	–	–	575	70	16	70	–	–
700	860	810	26	24	M24	711	–	721	40	30	40	–	16	–	–	670	76	16	70	–	–
800	975	920	30	24	M27	813	–	824	44	30	44	–	16	–	–	770	76	16	70	–	–
900	1075	1020	30	24	M27	914	–	926	48	30	48	–	16	–	–	860	74	16	70	–	–
1000	1175	1120	30	28	M27	1016	–	1028	52	30	52	–	18	–	–	960	74	16	70	–	–
1200	1375	1320	30	32	M27	1219	–	1234	60	32	50	–	20	–	–	1160	94	20	90	–	–
1400	1575	1520	30	36	M27	1422	–	–	–	38	–	–	–	–	–	1346	96	20	–	–	–
1600	1790	1730	30	40	M27	1626	–	–	–	46	–	–	–	–	–	1546	102	20	–	–	–
1800	1990	1930	30	44	M27	1829	–	–	–	46	–	–	–	–	–	1746	110	20	–	–	–
2000	2190	2130	30	48	M27	2032	–	–	–	50	–	–	–	–	–	1950	122	22	–	–	–
2200	2405	2340	33	52	M27	2035	–	–	–	56	–	–	–	–	–	–	129	25	–	–	–
2400	2605	2540	33	56	M30	2438	–	–	–	62	–	–	–	–	–	–	143	25	–	–	–
2600	2805	2740	33	60	M30	2620	–	–	–	64	–	–	–	–	–	–	148	25	–	–	–
2800	3030	2960	36	64	M30	2820	–	–	–	74	–	–	–	–	–	–	161	25	–	–	–
3000	3230	3160	36	68	M33	3020	–	–	–	80	–	–	–	–	–	–	170	25	–	–	–
3200	3430	3360	36	72	M33	3220	–	–	–	84	–	–	–	–	–	–	180	25	–	–	–
3400	3630	3560	36	76	M33	3420	–	–	–	90	–	–	–	–	–	–	194	28	–	–	–
3600	3840	3770	36	80	M33	3620	–	–	–	96	–	–	–	–	–	–	201	28	–	–	–
3800	4045	3970	39	80	M36	3820	–	–	–	102	–	–	–	–	–	–	212	28	–	–	–
4000	4245	4170	39	84	M36	4020	–	–	–	106	–	–	–	–	–	–	226	28	–	–	–

DIN EN 1092-1 Flange PN 6

DN	Mating dimensions					A	Bore Diameter		Flange thickness			E	F	G max	Length			Neck diameters			R	S
	D	K	L	Bolting
				No	Size		B1	B2	C1*	C2 C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 02, 05, 11, 12, 13, 21					11 21**	01 12 32	02	01 02 04	11 12 13 21	05	02 04	32 34	05	12	11 34	11 34	11 34	12	21	11 12 13 21	11
10	75	50	11	4	M10	17.2	18	21	12	12	12	3	10	–	20	28	6	26	25	20	4	1.8
15	80	55	11	4	M10	21.3	22	25	12	12	12	3	10	–	20	30	6	30	30	26	4	2
20	90	65	11	4	M10	26.9	27.5	31	14	14	14	4	10	–	24	32	6	38	40	34	4	2.3
25	100	75	11	4	M10	33.7	34.5	38	14	14	14	4	10	–	24	35	6	42	50	44	4	2.6
32	120	90	14	4	M12	42.4	43.5	46	16	14	14	5	10	–	26	35	6	55	60	54	6	2.6
40	130	100	14	4	M12	48.3	49.5	53	16	14	14	5	10	–	26	38	7	62	70	64	6	2.6
50	140	110	14	4	M12	60.3	61.5	65	16	14	14	5	12	–	28	38	8	74	80	74	6	2.9
65	160	130	14	4	M12	76.1	77.5	81	16	14	14	6	12	55	32	38	9	88	100	94	6	2.9
80	190	150	18	4	M16	88.9	90.5	94	18	16	16	6	12	70	34	42	10	102	110	110	8	3.2
100	210	170	18	4	M16	114.3	116	120	18	16	16	6	14	90	40	45	10	130	130	130	8	3.6
125	240	200	18	8	M16	139.7	141.5	145	20	18	18	6	14	115	44	48	10	155	160	160	8	4
150	265	225	18	8	M16	168.3	170.5	174	20	18	18	6	14	140	44	48	12	184	185	182	10	4.5
200	320	280	18	8	M16	219.1	221.5	226	22	20	20	6	16	190	44	55	15	236	240	238	10	5.9
250	375	335	18	12	M16	273	276.5	281	24	22	22	8	18	235	44	60	15	290	295	284	12	6.3
300	440	395	22	12	M20	323.9	327.5	333	24	22	22	8	18	285	44	62	15	342	355	342	12	7.1
350	490	445	22	12	M20	355.6	359.5	365	26	22	22	8	18	330	–	62	15	385	–	392	12	7.1
400	540	495	22	16	M20	406.4	411	416	28	22	22	8	20	380	–	65	15	438	–	442	12	7.1
450	595	550	22	16	M20	457	462	467	30	22	24	8	20	425	–	65	15	492	–	494	12	7.1
500	645	600	22	20	M20	508	513.5	519	30	24	24	8	22	475	–	68	15	538	–	544	12	7.1
600	755	705	26	20	M24	610	616.5	622	32	30	30	8	22	575	–	70	16	640	–	642	12	7.1
700	860	810	26	24	M24	711	–	–	–	24	40	–	–	670	–	70	16	740	–	746	12	7.1
800	975	920	30	24	M27	813	–	–	–	24	44	–	–	770	–	70	16	842	–	850	12	7.1
900	1075	1020	30	24	M27	914	–	–	–	26	48	–	–	860	–	70	16	942	–	950	12	7.1
1000	1175	1120	30	28	M27	1016	–	–	–	26	52	–	–	960	–	70	16	1045	–	1050	16	7.1
1200	1405	1340	33	32	M30	1219	–	–	–	28	60	–	–	1160	–	90	20	1248	–	1264	16	8
1400	1630	1560	36	36	M33	1422	–	–	–	32	68	–	–	1346	–	90	20	1452	–	1480	16	8
1600	1830	1760	36	40	M33	1626	–	–	–	34	76	–	–	1546	–	90	20	1655	–	1680	16	9
1800	2045	1970	39	44	M36	1829	–	–	–	36	84	–	–	1746	–	100	20	1855	–	1878	16	10
2000	2265	2180	42	48	M39	2032	–	–	–	38	92	–	–	1950	–	110	25	2058	–	2082	16	11
2200	2475	2390	42	52	M39	2035	–	–	–	42	–	–	–	–	–	115	25	2260	–	–	18	12
2400	2685	2600	42	56	M39	2438	–	–	–	44	–	–	–	–	–	125	25	2462	–	–	18	13
2600	2905	2710	48	60	M45	2620	–	–	–	46	–	–	–	–	–	130	25	2665	–	–	18	14
2800	3115	3020	48	64	M45	2820	–	–	–	48	–	–	–	–	–	135	30	2865	–	–	18	15
3000	3315	3220	48	68	M45	3020	–	–	–	50	–	–	–	–	–	140	30	3068	–	–	18	16
3200	3525	3430	48	72	M45	3220	–	–	–	54	–	–	–	–	–	150	30	3272	–	–	20	18
3400	3735	3640	48	76	M45	3420	–	–	–	56	–	–	–	–	–	160	35	3475	–	–	20	18
3600	3970	3860	56	80	M52	3620	–	–	–	60	–	–	–	–	–	165	35	3678	–	–	20	18

• * Above DN 600 dimension C1 is to be specified by the purchaser.
• ** For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

DIN EN 1092-1 Flange PN 10

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck			R	S
	D	K	L	Bolting																Diameters
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 02, 05, 11, 12, 13, 21					11	1	2	4	1	11	21	5	2	32	5	12	11	11	11	12	21	11	11
						21*	12			2	12			4	34			34	34	34			12	34
						34	32			4	13												21
10	Usar dimensiones PN 40
15
20
25
32
40
50	Usar dimensiones PN 16
65
80
100
125
150
200	340	295	22	8	M20	219.1	221.5	226	240	24	24	24	24	6	20	190	44	62	16	234	246	246	10	5.9
250	395	350	22	12	M20	273	276.5	218	294	26	26	26	26	8	22	235	46	68	16	292	298	298	12	6.3
300	445	400	22	12	M20	323.9	327.5	333	348	26	26	26	26	8	22	285	46	68	16	342	350	348	12	7.1
350	505	460	22	16	M20	335.6	359.5	365	400	28	26	26	26	8	22	330	53	68	16	385	400	408	12	7.1
400	565	515	26	16	M24	406.4	411	416	450	32	26	26	26	8	24	380	57	72	16	440	456	456	12	7.1
450	615	565	26	20	M24	457	462	467	498	36	28	28	28	8	24	425	63	72	16	488	502	502	12	7.1
500	670	620	26	20	M24	508	513.5	519	550	38	28	28	28	8	26	475	67	75	16	542	559	559	12	7.1
600	780	725	30	20	M27	610	616.5	622	650	42	34	34	34	8	26	575	75	80	18	642	658	658	12	7.1
700	895	840	30	24	M27	711.1	–	–	–	–	30	34	38	–	–	670	–	80	18	746	–	772	12	8
800	1015	950	33	24	M30	813	–	–	–	–	32	36	42	–	–	770	–	90	18	850	–	876	12	8
900	1115	1050	33	28	M30	914	–	–	–	–	34	38	46	–	–	860	–	95	20	950	–	976	12	10
1000	1230	1160	36	28	M33	1016	–	–	–	–	34	38	52	–	–	960	–	95	20	1052	–	1080	16	10
1200	1455	1380	39	32	M36	1219	–	–	–	–	38	44	60	–	–	1160	–	115	25	1256	–	1292	16	11
1400	1675	1590	42	36	M39	1422	–	–	–	–	42	48	–	–	–	1346	–	120	25	1460	–	1496	16	12
1600	1915	1820	48	40	M45	1626	–	–	–	–	46	52	–	–	–	1546	–	130	25	4666	–	1712	16	14
1800	2115	2020	48	44	M45	1829	–	–	–	–	50	56	–	–	–	1746	–	140	30	4868	–	1910	16	15
2000	2325	2230	48	48	M45	2032	–	–	–	–	54	60	–	–	–	1950	–	150	30	2072	–	2120	16	16
2200	2550	2440	56	52	M52	2235	–	–	–	–	58	–	–	–	–	–	–	160	35	2275	–	–	18	18
2400	2760	2650	56	56	M52	2438	–	–	–	–	62	–	–	–	–	–	–	170	35	2478	–	–	18	20
2600	2960	2850	56	60	M52	2620	–	–	–	–	66	–	–	–	–	–	–	180	40	2680	–	–	18	20
2800	3180	3070	56	64	M52	2820	–	–	–	–	70	–	–	–	–	–	–	190	40	2882	–	–	18	22
3000	3405	3290	62	68	M56	3020	–	–	–	–	75	–	–	–	–	–	–	200	45	3085	–	–	18	24

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

Note : The p/t rating from EN 1092-1 apply only for flange type 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser.

DIN EN 1092-1 Flange PN 16

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck			R	S
	D	K	L	Bolting																Diameters
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 02, 05, 11, 12, 21					11	1	2	4	1	11	21	5	2	32	5	12	11	11	11	12	21	11	11
						21*	12			2	12			4	34		13	34	34	34	13		12	34
						34	32			4	13												13
																							21
10	Usar dimensiones PN 40
15
20
25
32
40
50	165	125	18	4	M16	60.3	61.5	65	77	19	18	18	18	5	16	–	28	45	8	74	84	84	5	2.9
65	185	145	18	**	M16	76.1	77.5	81	96	20	18	18	18	6	16	55	32	45	10	92	104	104	6	2.9
80	200	160	18	8	M16	88.9	90.5	94	108	20	20	20	20	6	16	70	34	50	10	105	118	120	6	3.2
100	220	180	18	8	M16	114.3	116	120	134	22	20	20	20	6	18	90	40	52	12	131	140	140	8	3.6
125	250	210	18	8	M16	139.7	141.5	145	162	22	22	22	22	6	18	115	44	55	12	156	168	170	8	4
150	285	240	18	8	M20	168.3	170.5	174	188	24	22	22	22	6	20	140	44	55	12	184	195	190	10	4.5
200	340	295	22	12	M20	219.1	221.5	226	240	26	24	24	24	6	20	190	44	62	16	235	246	246	10	5.9
250	405	355	26	12	M24	273	276.5	281	294	29	26	26	26	8	22	235	46	70	16	292	298	296	12	6.3
300	460	410	26	12	M24	323.9	327.5	333	348	32	28	28	28	8	24	285	46	78	16	344	350	350	12	7.1
350	520	470	26	16	M24	355.6	359.5	365	400	35	30	30	30	8	26	330	57	82	16	390	400	410	12	8
400	580	525	30	16	M27	406.4	411	416	454	38	32	32	32	8	28	380	63	85	16	445	456	458	12	8
450	640	585	30	20	M27	457	462	467	500	42	40	40	40	8	30	425	68	87	16	490	502	516	12	8
500	715	650	33	20	M30	508	513.5	519	556	46	44	44	44	8	32	475	73	90	16	548	559	576	12	8
600	840	770	36	20	M33	610	616.5	622	660	52	54	54	54	8	32	575	83	95	18	652	658	690	12	8.8
700	910	840	36	24	M33	711.1	–	–	–	–	36	42	48	–	–	670	83	100	18	755	760	760	12	8.8
800	1025	950	39	24	M36	813	–	–	–	–	38	42	52	–	–	770	90	105	20	855	864	862	12	10
900	1125	1050	39	28	M36	914	–	–	–	–	40	44	58	–	–	860	94	110	20	955	968	962	12	10
1000	1255	1170	42	28	M39	1016	–	–	–	–	42	46	64	–	–	960	100	120	22	1058	1072	1076	16	10
1200	1485	1390	48	32	M45	1219	–	–	–	–	48	52	76	–	–	1160	–	130	30	1262	–	1282	16	12.5
1400	1685	1590	48	36	M45	1422	–	–	–	–	52	58	–	–	–	1346	–	145	30	1465	–	1482	16	14.2
1600	1930	1820	56	40	M52	1626	–	–	–	–	58	64	–	–	–	1546	–	160	35	1668	–	1696	16	16
1800	2130	2020	56	44	M52	1829	–	–	–	–	62	68	–	–	–	1746	–	170	35	1870	–	1896	16	17.5
2000	2345	2230	62	48	M56	2032	–	–	–	–	66	70	–	–	–	1950	–	180	40	2072	–	2100	16	20

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

Note : The p/t rating from EN 1092-1 apply only for flange type 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser.

DIN EN 1092-1 Flange PN 25

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck Diameters			R	S
	D	K	L	Bolting
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 02, 05, 11, 12, 21					11 21* 34	01 12 32	02	04	01 02 04	11 12 13	21	05	02 04	32 34	05	12 13	11 34	11 34	11 34	12 13	21	11 12 13 21	11 34
10	Usar dimensiones PN 40
15
20
25
32
40
50
65
80
100
125
150
200	360	310	26	12	M24	219.1	221.5	226	250	32	30	30	30	6	26	190	52	80	16	244	256	252	10	6.3
250	425	370	30	12	M27	273.5	276.5	281	302	35	32	32	32	8	26	235	60	88	18	298	310	304	12	7.1
300	485	430	30	16	M27	323.9	327.5	333	356	38	34	34	34	8	28	285	67	92	18	352	364	364	12	8
350	555	490	33	16	M30	355.6	359.5	365	408	42	38	38	38	8	32	332	72	100	20	398	418	418	12	8
400	620	550	36	16	M33	406.4	411	416	462	46	40	40	40	8	34	380	78	110	20	452	472	472	12	8.8
450	670	600	36	20	M33	457	462	467	510	50	46	46	46	8	36	425	84	110	20	500	520	520	12	8.8
500	730	660	36	20	M33	508	513.5	519	568	56	48	48	48	8	38	475	90	125	20	558	580	580	12	10
600	845	770	39	20	M36	610	616.5	622	670	68	58	58	58	8	40	575	100	125	20	660	684	684	12	11
700	960	875	42	24	M39	711	–	–	–	–	46	50	–	–	–	–	–	125	20	760	–	780	12	12.5
800	1085	990	48	24	M45	813	–	–	–	–	50	54	–	–	–	–	–	135	22	864	–	882	12	14.2
900	1158	1090	48	28	M45	914	–	–	–	–	54	58	–	–	–	–	–	145	24	968	–	982	12	16
1000	1320	1210	56	28	M52	1016	–	–	–	–	58	62	–	–	–	–	–	155	24	1070	–	1086	16	17.5
1200	1530	1420	56	32	M52	1219	–	–	–	–	–	70	–	–	–	–	–	–	–	–	–	1296	18	–
1400	1755	1640	62	36	M56	1422	–	–	–	–	–	76	–	–	–	–	–	–	–	–	–	1508	18	–
1600	1975	1860	62	40	M56	1626	–	–	–	–	–	84	–	–	–	–	–	–	–	–	–	1726	20	–
1800	2195	2070	70	44	M64	1829	–	–	–	–	–	90	–	–	–	–	–	–	–	–	–	1920	20	–
2000	2425	2300	70	48	M64	2032	–	–	–	–	–	96	–	–	–	–	–	–	–	–	–	2150	20	–

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.
• Note : The p/t rating from EN 1092-1 apply only for flange type 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser.

DIN EN 1092-1 Flange PN 40

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck Diameters			R	S
	D	K	L	Bolting
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 02, 05, 11, 12, 21					11 21* 34	01 12 32	02	04	01 02 04	11 12 13	21	05	02 04	32 34	05	12 13	11 34	11 34	11 34	12 13	21	11 12 13 21	11 34
10	90	60	14	4	M12	17.2	18	21	31	14	16		16	3	12	–	22	35	6	28	30	28	4	1.8
15	95	65	14	4	M12	21.3	22	25	35	14	16		16	3	12	–	22	38	6	32	35	32	4	2
20	105	75	14	4	M12	26.9	27.5	31	42	16	18		18	4	14	–	26	40	6	40	45	40	4	2.3
25	115	85	14	4	M12	33.7	34.5	38	49	16	18		18	4	14	–	28	40	6	46	52	52	4	2.6
32	140	100	18	4	M16	42.4	43.5	47	59	18	18		18	5	14	–	30	42	6	56	60	60	6	2.6
40	150	110	18	4	M16	48.3	49.5	53	67	18	18		18	5	14	–	32	45	7	64	70	70	6	2.6
50	165	125	18	4	M16	60.3	61.5	65	77	20	20		20	5	16	–	34	48	8	75	84	84	6	2.9
65	185	145	18	8	M16	76.1	77.5	81	96	22	22		22	6	16	55	38	52	10	90	104	104	6	2.9
80	200	160	18	8	M16	88.9	90.5	94	114	24	24		24	6	18	70	40	58	12	105	118	120	8	3.2
100	235	190	22	8	M20	114.3	116	120	138	26	24		24	6	20	90	44	65	12	134	145	142	8	3.6
125	270	220	26	8	M24	139.7	141.5	145	166	28	26		26	6	22	115	48	68	12	162	170	162	8	4
150	300	250	26	8	M24	168.3	170.5	174	194	30	28		28	6	24	140	52	75	12	192	200	192	10	4.5
200	375	320	30	12	M27	219.1	221.5	226	250	36	34		36	6	28	190	52	88	16	244	260	254	10	6.3
250	450	385	33	12	M30	273	276.5	281	312	42	38		38	8	30	235	60	105	18	306	312	312	12	7.1
300	515	450	33	16	M30	323.9	327.5	333	368	48	42		42	8	34	285	67	115	18	362	380	378	12	8
350	580	510	36	16	M33	355.6	359.5	365	418	54	46		46	8	36	330	72	125	20	408	424	432	12	8.8
400	660	585	39	16	M36	406.4	411	416	472	60	50		50	8	42	380	78	135	20	462	478	498	12	11
450	685	610	39	20	M36	457	462	467	510	66	57		57	8	46	425	84	135	20	500	522	522	12	12.5
500	755	670	42	20	M39	508	513.5	519	572	72	57		57	8	50	475	90	140	20	562	576	576	12	14.2
600	890	795	48	20	M45	610	616.5	622	676	84	72		72	8	54	575	100	150	20	666	686	686	12	16

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

Note : The p/t rating from EN 1092-1 apply only for flange type 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser.

DIN EN 1092-1 Flange PN 63

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck Diameters			R	S
	D	K	L	Bolting
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 05, 11, 12, 13, 21					11 21*	01 12	–	–	01	11 12 13	21	05	–	–	05	12 13	11	11	11	12 13	21	11 12 13 21	11
10	Usar dimensiones PN 100
15
20
25
32
40
50	180	135	22	4	M20	60.3	61.5	–	–	26	26	26	26	–	–	–	36	62	10	82	90	90	6	2.9
65	205	160	22	8	M20	76.1	77.5	–	–	26	26	26	26	–	–	45	40	68	12	98	112	105	6	3.2
80	215	170	22	8	M20	88.9	90.5	–	–	30	28	28	28	–	–	60	44	72	12	112	125	122	8	3.6
100	250	200	26	8	M24	114.3	116	–	–	32	30	30	30	–	–	80	52	78	12	138	152	146	8	4
125	295	240	30	8	M27	139.7	141.5	–	–	34	34	34	34	–	–	105	56	88	12	168	185	177	8	4.5
150	345	280	33	8	M30	168.3	170.5	–	–	36	36	36	36	–	–	130	60	95	12	202	215	204	10	5.6
200	415	345	36	12	M33	219.1	221.5	–	–	46	42	42	42	–	–	180	–	110	16	256	–	264	10	7.1
250	470	400	36	12	M33	273	276.5	–	–	54	46	46	46	–	–	220	–	125	18	316	–	320	12	8.8
300	530	460	36	16	M33	323.9	327.5	–	–	62	52	52	52	–	–	270	–	140	18	372	–	378	12	11
350	600	525	39	16	M36	355.6	359.5	–	–	72	56	56	56	–	–	310	–	150	20	420	–	434	12	12.5
400	670	585	42	16	M39	406.4	411	–	–	78	60	60	60	–	–	360	–	160	20	475	–	490	12	14.2
500	800	705	48	20	M45	–	–	–	–	–	–	68	–	–	–	–	–	–	–	–	–	602	12	–
600	930	820	56	20	M52	–	–	–	–	–	–	76	–	–	–	–	–	–	–	–	–	714	15	–
700	1045	935	56	24	M52	–	–	–	–	–	–	84	–	–	–	–	–	–	–	–	–	826	15	–
800	1165	1050	62	24	M56	–	–	–	–	–	–	92	–	–	–	–	–	–	–	–	–	938	18	–
900	1285	1170	62	28	M56	–	–	–	–	–	–	98	–	–	–	–	–	–	–	–	–	1048	18	–
1000	1415	1290	70	28	M64	–	–	–	–	–	–	108	–	–	–	–	–	–	–	–	–	1162	18	–
1200	1665	1530	78	32	M72	–	–	–	–	–	–	126	–	–	–	–	–	–	–	–	–	1390	18	–

Note : The p/t rating from EN 1092-1 apply only for flange type 05, 11, 12, 13 and 21 having nominal sizes up to and including DN 600. The p/t rating of all other flanges shall be agreed between the manufacturer and the purchaser.

DIN EN 1092-1 Flange PN 100

DN	Mating dimensions					A	Bore Diameter			Flange Thickness				E	F	G max	Length			Neck Diameters			R	S
	D	K	L	Bolting
				No	Size		B1	B2	B3	C1	C2	C3	C4				H1	H2	H3	N1	N2	N3
	Flange type
	01, 05, 11, 12, 21					11 21*	01 12	–	–	01	11 12 13	21	05	–	–	05	12 13	11	11	11	12 13	21	11 12 13 21	11
10	100	70	14	4	M12	17.2	18	–	–	20	20	20	20	–	–	–	28	45	6	32	40	40	4	1.8
15	105	75	14	4	M12	21.3	22	–	–	20	20	20	20	–	–	–	28	45	6	34	43	45	4	2
20	130	90	18	4	M16	26.9	27.5	–	–	22	22	22	22	–	–	–	30	48	8	42	52	50	4	2.6
25	140	100	18	4	M16	33.7	34.5	–	–	24	24	24	24	–	–	–	32	58	8	52	60	61	4	2.6
32	155	110	22	4	M20	42.4	43.5	–	–	24	24	26	24	–	–	–	32	60	8	62	68	68	6	2.9
40	170	125	22	4	M20	48.3	49.5	–	–	26	26	28	26	–	–	–	34	62	10	70	80	82	6	2.9
50	195	145	26	4	M24	60.3	61.3	–	–	28	28	30	28	–	–	–	36	68	10	90	95	96	6	3.2
65	220	170	26	8	M24	76.1	77.5	–	–	30	30	34	30	–	–	45	40	76	12	108	118	118	6	3.6
80	230	180	26	8	M24	88.9	90.5	–	–	34	32	36	32	–	–	60	44	78	12	120	130	128	8	4
100	265	210	30	8	M27	114.3	116	–	–	36	36	40	36	–	–	80	52	90	12	150	158	150	8	5
125	315	250	33	8	M30	139.7	141.5	–	–	42	40	40	40	–	–	105	56	105	12	180	188	185	8	6.3
150	355	290	33	12	M30	168.3	170.5	–	–	48	44	44	44	–	–	130	60	115	12	210	225	216	10	7.1
200	430	360	36	12	M33	219.1	221.5	–	–	60	52	52	52	–	–	180	–	130	16	278	–	278	10	10
250	505	430	39	12	M36	273	276.5	–	–	72	60	60	60	–	–	210	–	157	18	340	–	340	12	12.5
300	585	500	42	16	M39	323.9	327.5	–	–	84	68	68	68	–	–	260	–	170	18	400	–	407	12	14.2
350	655	560	48	16	M45	355.6	359.5	–	–	95	74	74	74	–	–	300	–	189	20	460	–	460	12	16
400	715	620	48	16	M45	406.4	411	–	–	406	–	78	–	–	–	–	–	–	–	–	–	518		–
500	870	760	56	20	M52	508	543.5	–	–	128	–	94	–	–	–	–	–	–	–	–	–	630		–

DIN EN 1092-1 Flange PN 160

DN	Mating dimensions					A	Flange Thickness		Length		Neck Diameters		R1		S
	D	K	L	Bolting
				No	Size		C2	C3	H2	H3	N1	N3
	Flange type
	11, 21					11 21*	11	21	11	11	11	21	11	21	11
10	100	70	14	4	M12	17.2	20	20	45	6	32	40	4	4	2.0
15	105	75	14	4	M12	21.3	20	20	45	6	34	45	4	4	2.0
25	140	100	18	4	M16	33.7	24	24	58	8	52	61	4	4	2.9
40	170	125	22	4	M20	48.3	28	28	64	10	70	82	6	4	3.6
50	195	145	26	4	M24	60.3	30	30	75	10	90	96	6	4	4.0
65	220	170	26	8	M24	76.1	34	34	82	12	108	118	6	5	5.0
80	230	180	26	8	M24	88.9	36	36	86	12	120	128	8	5	6.3
100	265	210	30	8	M27	114.3	40	40	100	12	150	150	8	5	8.0
125	315	250	33	8	M30	139.7	44	44	115	14	180	184	8	6	10.0
150	355	290	33	12	M30	168.3	50	50	128	14	210	224	10	6	12.5
200	430	360	36	12	M33	219.1	60	60	140	16	278	288	10	8	16.0
250	515	430	42	12	M39	273.0	68	68	155	18	340	346	12	8	20.0
300	585	500	42	16	M39	323.9	78	78	175	18	400	414	12	10	22.2

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

DIN EN 1092-1 Flange PN 250

DN	Mating dimensions					A	Flange Thickness		Length		Neck Diameters		R1		S
	D	K	L	Bolting
				No	Size		C2	C3	H2	H3	N1	N3
	Flange type
	11, 21					11 21*	11	21	11	11	11	21	11	21	11
10	125	85	18	4	M16	–	–	24	–	–	–	46	–	4	–
15	130	90	18	4	M16	21.3	26	26	60	6	48	52	4	4	2.6
25	150	105	22	4	M20	33.7	28	28	65	8	60	63	4	4	3.6
40	185	135	26	4	M24	48.3	34	34	80	10	80	90	6	4	5.0
50	200	150	26	4	M24	60.3	38	38	85	10	84	102	6	5	6.3
65	230	180	26	8	M24	76.1	42	42	95	12	95	125	6	5	8.0
80	255	200	30	8	M27	101.6	46	46	102	12	136	142	8	5	11.0
100	300	235	33	8	M30	127.0	54	54	120	14	164	168	8	6	14.2
125	340	275	33	8	M30	152.4	60	60	140	16	200	207	8	6	16.0
150	390	320	36	12	M33	177.8	68	68	160	18	240	246	10	8	17.5
200	485	400	42	12	M39	244.5	82	82	1900	25	305	314	10	8	25.0
250	585	490	48	16	M45	298.5	100	100	215	30	385	394	12	10	32.0
300	690	590	52	16	M48	–	–	120	–	–	–	480	–	10	–

• * For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.
• * For flanges type 21
• * For flanges type 11 use flanges PN 320

DIN EN 1092-1 Flange PN 320

DN	Mating dimensions					A	Flange Thickness		Length		Neck Diameters		R1		S
	D	K	L	Bolting
				No	Size		C2	C3	H2	H3	N1	N3
	Flange type
	11, 21					11 21*	11	21	11	11	11	21	11	21	11
10	125	85	18	4	M16	17.2	24	24	58	–	44	46	4	4	2.6
15	130	90	18	4	M16	21.3	26	26	60	6	48	52	4	4	3.2
25	160	115	22	4	M20	33.7	34	34	78	8	68	72	4	5	5.0
40	195	145	26	4	M24	48.3	38	38	88	10	92	96	6	5	6.3
50	210	160	26	8	M24	63.5	42	42	100	10	106	110	6	6	8.0
65	255	200	30	8	M24	88.9	51	51	120	12	138	137	6	6	11.0
80	275	220	30	8	M27	101.6	55	55	130	14	156	160	8	5	12.5
100	335	265	36	8	M33	133.0	65	65	145	16	186	190	8	8	16.0
125	380	310	36	12	M33	168.3	75	75	175	20	230	235	8	8	20.0
150	425	350	39	12	M36	193.7	84	84	195	25	265	266	10	10	25.0
200	525	440	42	16	M39	244.5	103	103	235	30	345	350	10	10	30.0
250	640	540	52	16	M48	323.9	125	125	300	40	428	432	12	10	40.0

• * En bridas tipo 21 el Outside Diameter del hub se corresponde aproximadamente al Outside Diameter de la tuber�a.

DIN EN 1092-1 Flange PN 400