Flanges - Types and their Specifications

Flanges

150 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	89	11.2	47.6	15.9	15.9	60.5	4	15	35
3/4	117	15.9	57.2	25.4	25.4	82.5	4	15	43
1	108	14.3	55.6	17.5	17.5	79.5	4	15	51
1.1/4	117	15.9	57.2	20.6	20.6	89.0	4	15	64
1.1/2	127	17.5	61.9	22.2	22.2	98.5	4	15	73
2	152	19.1	63.5	25.4	25.4	120.5	4	19	92
2.1/2	178	22.3	69.8	28.6	28.6	139.5	4	19	105
3	190	23.9	69.8	30.2	30.2	152.5	4	19	127
3.1/2	216	23.9	71.4	31.8	31.8	178.0	8	19	140
4	229	23.9	86.2	33.3	33.3	190.5	8	19	157
5	254	23.9	88.9	36.5	36.5	216.0	8	22	186
6	279	25.4	88.9	39.7	39.7	241.5	8	22	216
8	343	28.6	101.6	44.4	44.4	298.5	8	22	270
10	406	30.2	101.6	49.2	49.2	362.0	12	25	324
12	483	31.8	114.3	55.6	55.6	432.0	12	25	381
14	533	35.0	127.0	57.2	79.4	476.0	12	29	413
16	597	36.6	127.0	63.5	87.3	539.5	16	29	470
18	635	39.7	139.7	68.3	96.8	578.0	16	32	533
20	698	42.9	144.5	73.0	103.2	635.0	20	32	584
24	813	47.7	152.4	82.6	111.1	749.5	20	35	692

300 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	95	14.3	52.4	22.2	22.2	666.5	4	15	35
3/4	117	15.9	57.2	25.4	25.4	82.4	4	19	43
1	124	17.5	61.9	27.0	27.0	89.0	4	19	51
1-1/4	133	19.1	65.1	27.0	27.0	98.5	4	19	64
1-1/2	156	20.7	68.3	30.2	30.2	114.5	4	22	73
2	165	22.3	69.8	33.3	33.3	127.0	8	19	92
2-1/2	190	25.4	76.2	38.1	38.1	149.0	8	22	105
3	210	28.6	79.4	42.9	42.9	168.0	8	22	127
4	254	318	85.7	47.6	47.6	200.0	8	22	157
5	279	35.0	98.4	50.8	50.8	235.0	8	22	186
6	313	36.6	98.4	52.4	52.4	270.0	12	22	216
6	381	413	111.1	61.9	91.9	330.0	12	25	270
10	444	47.7	117.5	66.7	95.3	387.5	16	29	324
12	521	50.8	130.2	73.0	101.6	451.0	16	32	381
14	584	54.0	142.9	76.2	111.1	514.5	20	32	413
16	648	57.2	146.0	82.6	120.7	571.5	20	35	470
18	711	60.4	158.8	88.9	130.2	628.5	24	35	533
20	775	63.5	161.9	95.2	139.7	686.0	24	35	584
24	914	69.9	168.3	106.4	152.4	843.0	24	41	692

600 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	95	14.3	52.4	22.2	22.2	66.5	4	15	35
3/4	117	15.9	57.2	25.4	25.4	82.5	4	19	43
1	124	17.5	61.9	27.0	27.0	89.0	4	19	51
1-1/4	133	20.7	66.7	28.6	28.6	98.5	4	19	64
1-1/2	156	22.3	69.8	31.8	31.8	114.5	4	22	73
2	165	25.4	73.0	36.5	36.5	127.0	8	19	92
2-1/2	190	28.6	79.4	41.3	41.3	149.0	8	22	105
3	210	31.8	82.6	46.0	46.0	168.0	8	22	127
3-1/2	229	35.0	85.7	49.2	49.2	184.0	8	25	140
4	273	38.1	101.6	54.0	54.0	216.0	8	25	157
5	330	44.5	114.3	60.3	60.3	266.5	8	29	186
6	356	47.7	117.5	66.7	66.7	292.0	12	29	216
8	419	55.6	133.4	76.2	76.2	349.0	12	32	270
10	508	63.5	152.4	85.7	115.1	432.0	16	85	324
12	559	66.7	155.6	92.1	111.1	489.0	20	35	381
14	603	69.9	165.1	93.7	117.5	527.0	20	38	413
16	686	76.2	177.8	106.4	127.0	603.0	20	41	470
18	743	82.6	184.2	117.6	139.7	654.0	20	45	533
20	813	88.9	190.5	127.0	165.1	724.0	24	45	584
24	940	101.6	203.2	139.7	184.2	838.0	24	51	692

900 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	121	22.3	60.3	31.8	31.8	82.5	4	22	35
3/4	130	25.4	69.8	34.9	34.9	89.0	4	22	43
1	149	28.6	78.0	41.3	41.3	101.5	4	25	51
1-1/4	159	28.6	78.0	41.3	41.3	111.0	4	25	64
1-1/2	178	31.8	82.6	44.4	44.4	124.0	4	29	78
2	216	38.1	101.6	57.2	57.2	165.0	8	25	92
2-1/2	244	41.3	104.8	63.5	63.5	190.5	8	29	105
8	241	38.1	101.6	54.0	54.0	190.5	8	25	127
3-1/2
4	292	44.5	114.3	69.8	69.8	235.0	8	32	157
5	349	50.8	127.0	79.4	79.4	279.5	8	35	186
6	381	55.6	189.7	85.7	85.7	317.5	12	32	216
8	470	68.5	161.9	101.8	114.3	393.5	12	38	270
10	546	69.9	184.2	108.0	127.0	470.0	16	38	324
12	610	79.4	200.0	117.5	142.9	533.5	20	38	381
14	584	54.0	142.9	76.2	111.1	514.5	20	32	413
16	711	60.4	158.8	88.9	130.2	628.5	24	35	533
20	775	63.5	161.9	95.2	139.7	686.0	24	35	584
24	914	69.9	168.3	106.4	152.4	843.0	24	41	692

1500 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum / thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum / thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	12.1	22.3	60.3	31.8	31.8	82.5	4	22	35
3/4	130	25.4	69.8	34.9	34.9	89.0	4	22	43
1	149	28.6	73.0	41.3	41.3	101.5	4	25	51
1-1/4	159	28.6	73.0	41.3	41.3	111.0	4	25	64
1-1/2	178	31.8	82.6	44.4	44.4	124.0	4	29	73
2	216	38.1	101.6	57.2	57.2	165.0	8	25	92
2-1/2	244	41.3	104.8	63.5	63.5	190.5	8	29	105
3	267	47.7	117.5	73.0	73.0	203.0	8	32	127
3-1/2
4	311	54.0	123.8	90.5	90.5	241.5	8	35	157
5	375	73.1	155.5	104.8	104.8	292.0	8	41	186
6	394	82.6	171.4	119.1	119.1	317.5	12	38	216
8	483	92.1	212.7	142.9	142.9	393.5	12	45	270
10	584	108.0	254.0	158.8	177.8	482.5	12	51	324
12	673	123.9	282.9	181.0	219.1	571.5	16	54	381
14	749	133.4	298.4	-----	241.3	635.0	16	60	413
16	826	146.1	311.2	-----	260.4	705.0	16	51	470
18	914	162.0	327.0	------	276.2	474.5	16	73	538
20	984	117.8	355.4	-----	292.1	832.0	16	80	584
24	1168	203.2	406.4	-----	330.2	990.5	16	92	692

2500 LB. FLANGES

Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Overall Length			Bolt Circle	No. and Size of Holes		O.D. of raised face
Normal pipe size	Outside dia. of flange	Minimum thickness of flange	Welding neck	Slip-on & socket welding	Lap Joint	Bolt Circle	No. and Size of Holes		O.D. of raised face
	O	Q	Y			Diam.	No.	dia.	R
1/2	133.4	30.2	73.0	39.7	39.7	88.9	4	22	34.9
3/4	139.7	31.8	79.4	42.9	42.9	95.3	4	22	42.9
1	158.8	34.9	88.9	47.6	47.6	108.0	4	25	50.8
1-1/4	184.2	38.1	95.3	52.4	52.4	130.2	4	29	63.5
1-1/2	203.2	44.5	111.1	60.3	60.3	146.0	4	32	73.0
2	235.0	50.8	127.0	69.9	69.9	171.5	8	29	92.1
2-1/2	266.7	57.2	142.9	79.4	79.4	196.9	8	32	104.8
3	304.8	66.7	168.3	92.1	92.1	228.6	8	35	127.0
3-1/2
4	355.6	76.2	190.5	108.0	108.0	273.0	8	41	157.2
5	419.1	92.1	228.6	130.2	130.2	323.9	8	48	185.7
6	482.6	108.0	273.1	152.4	152.4	268.3	8	54	215.9
8	552.5	127.0	317.5	177.8	177.8	438.2	12	54	269.9
10	673.1	165.1	419.1	228.6	228.6	539.8	12	67	323.9
12	762.0	184.2	463.6	254.0	254.0	619.1	12	73	381.03
14	---	---	---	---	---	---	--	---	---
16	---	---	---	---	---	---	--	---	---
18	---	---	---	---	---	---	--	---	--
20	---	---	---	---	---	---	--	---	--
24	---	---	---	---	---	---	--	---	--

WELDING NECK FLANGE BORES

Nom. pipe Size	Outside Diam	Light Wall 6	Sched. 20	Sched. 30	Std. Wall	Sched. 40	Sched. 60	Extra Strong	Sched. 80	Sched. 100	Sched. 120	Sched. / 140	Sched. 160	Double Extra Strong
1/2 3/4 1	0.840 1.050 1.315	.674 .884 1.097	..... ..... ....	..... ..... ....	0.622 0.824 1.049	0.622 0.824 1.049	..... ..... ....	0.546 0.742 0.957	0.546 0.742 0.957	..... ..... ....	..... ..... ....	..... ..... ....	0.464 0.612 0.815	0.252 0.434 0.599
1-1/4 1-1/2 2	1.660 1.900 2.375	1.442 1.682 2.157	..... ..... ....	..... ..... ....	1.380 1.610 2.067	1.380 1.610 2.067	..... ..... ....	1.278 1.500 1.939	1.278 1.500 1.939	..... ..... ....	..... ..... ....	..... ..... ....	1.160 1.338 1.687	0.896 1.100 1.503
2-1/2 3 3-1/2	2.875 3.500 4.000	2.635 3.260 3.760	..... ..... ....	..... ..... ....	2.469 3.068 3.548	2.469 3.068 3.548	..... ..... ....	2.323 2.900 3.364	2.323 2.900 3.364	..... ..... ....	.... .... ....	..... ..... ....	2.125 2.624 ....	1.771 2.300 2.728
4 5 6 8	4.500 5.563 6.625 8.625	4.260 5.295 6.357 8.329	... ... ... 8.125	... ... ... 8.071	4.026 5.047 6.065 7.981	4.026 5.047 6.065 7.981	... .... ... 7.813	3.826 4.813 5.761 7.625	3.826 4.813 5.761 7.625	... ... ... 7.437	3.624 4.563 5.501 7.187	... ... ... 7.001	3.438 4.313 5.187 6.813	3.152 4.063 4.897 6.875
10 12 14 16	10.750 12.750 14.000 16.000	10.420 12.390 13.500 15.500	10.250 12.250 13.376 15.376	10.136 12.090 13.250 15.250	10.020 12.000 13.250 15.250	10.020 11.938 13.124 15.000	9.750 11.626 12.812 14.688	9.750 11.750 13.000 15.000	9.562 11.374 12.500 14.312	9.312 11.062 12.124 13.938	0.062 10.750 11.814 13.564	8.750 10.500 11.500 13.124	8.500 10.500 11.500 13.124	8.750 10.750 .... ....
18 20 24	18.000 20.000 24.000	17.500 19.500 23.500	17.376 19.250 23.250	17.124 19.000 22.876	17.250 19.250 23.250	16.876 18.812 22.624	16.500 18.376 22.062	17.000 19.000 23.000	16.124 17.938 21.562	15.688 17.438 20.938	15.250 17.000 20.376	14.876 16.500 19.876	14.438 16.062 19.312	.... .... ....
30 36 42	30.000 36.000 42.000	29.376 35.376 ......	29.000 35.000	28.750 34.750	29.250 35.250 41.250	.... 34.500 ....	.... ..... ....	29.000 35.000 41.000	.... ..... ....	.... ..... ....	.... ..... ....	.... ..... ....	.... ..... ....	.... ..... ....

DIN 2527

	NW	D	Flange	k	Raised Face		Number	Bolts	Bolts	Dia. of Bolt Hole	Weight of One Flange (7.85 kg/dm3)
	NW	D	b	k	d4	f	Number	Bolts	Bolts	d₂	Type-B kg	Type-C kg
ND-6	10 15 20	75 80 90	12 12 14	50 55 65	35 40 50	2 2 2	4 4 4	M10 M10 M10	- - -	11.5 11.5 11.5	0.38 0.44 0.65	0.33 0.38 0.59
	25 32 40	100 120 130	14 14 14	75 90 100	60 70 80	2 2 3	4 4 4	M10 M12 M12	- (1/2") (1/2")	11.5 14.0 14.0	0.82 1.17 1.39	0.74 1.07 1.21
	50 65 80	140 160 190	14 14 16	110 130 150	90 110 128	3 3 3	4 4 4	M12 M12 M16	(1/2") (1/2") (3/8")	14 14 18	1.62 2.44 3.43	1.43 2.21 3.09
	100 125 150	210 240 265	16 18 18	170 200 225	148 178 202	3 3 3	4 8 8	M16 M16 M16	(5/8") (5/8") (5/8")	18 18 18	4.76 6.11 7.51	4.37 5.68 7.02
	(175) 200 250	295 320 375	20 20 22	255 280 335	232 258 312	3 3 3	8 8 12	M16 M16 M16	(5/8") (5/8") (5/8")	18 18 18	10.4 12.3 18.3	9.85 11.7 17.6
	300 350 400 500	440 490 540 645	22 22 22 24	395 445 495 600	365 415 465 570	4 4 4 4	12 12 16 20	M20 M20 M20 M20	(3/4") (3/4") (3/4") (3/4")	23 23 23 23	25.3 31.6 38.4 60.4	24.0 30.1 36.4 58.1
ND-10 (Note from 10 mm to 175 mm see ND-16	200 250 300	340 395 445	24 26 26	295 350 400	268 320 370	3 3 4	8 12 12	M20 M20 M20	(3/4") (3/4") (3/4")	23 23 23	16.5 24.0 30.9	15.6 23.1 29.4
ND-10 (Note from 10 mm to 175 mm see ND-16	350 400 500	505 565 670	26 26 28	460 515 620	430 482 585	4 4 4	16 16 20	M20 M24 M24	(3/4") (3/4") (3/4")	23 27 27	40.6 49.4 75.0	38.0 47.5 72.7
ND-16 Note : For DIN 2527 ND-10-4 Holes	10 15 20	90 95 105	14 14 16	60 65 75	40 45 58	2 2 2	4 4 4	M12 M12 M12	(1/2") (1/2") (1/2")	14 14 14	0.63 0.72 1.01	0.56 0.64 0.93
	25 32 40	115 140 150	14 14 16	60 65 75	40 45 58	2 2 2	4 4 4	M12 M16 M16	(1/2") (5/8") (5/8")	14 18 18	1.23 1.80 2.09	1.13 1.66 1.85
	50 65 80	165 185 200	18 18 20	125 145 160	102 122 138	3 3 3	4 4 4/8	M16 M16 M16	(5/8") (5/8") (5/8")	18 18 18	2.88 3.66 4.77	2.59 3.33 4.34
	100 125 150	220 250 285	20 22 22	180 210 240	158 188 212	3 3 3	8 8 8	M16 M16 M16	(5/8") (5/8") (5/8")	18 18 18	2.88 3.66 4.77	2.59 3.33 4.34
	100 125 150	220 250 285	20 22 22	180 210 240	158 188 212	3 3 3	8 8 8	M16 M16 M20	(5/8") (5/8") (3/4")	18 18 23	5.65 8.42 10.4	5.26 7.67 9.85
	(175) 200 250	315 340 405	24 24 26	270 295 355	242 268 320	3 3 3	8 12 12	M20 M20 M20	(3/4") (3/4") (7/8")	23 23 27	14.0 16.1 24.9	13.5 15.6 23.9
	300 350 400	460 520 580	28 30 32	410 470 525	378 438 490	4 4 4	12 16 16	M24 M24 M27	(7/8") (7/8") (1")	27 27 30	35.1 47.8 63.5	33.6 46.2 61.5
	500	715	34	650	610	4	20	M30	(1-1/8")	33	102	99.5
ND-25 Note: From 10mm to 150 mm see ND-40	(175) 200 250	330 360 425	28 30 32	280 310 370	248 278 335	3 3 3	12 12 12	M24 M24 M24	(7/8") (7/8") (1")	27 27 30	17.3 22.3 33.5	16.5 21.5 32.5
	300 350 400	485 555 620	34 38 40	430 490 550	395 450 505	4 4 4	16 16 16	M27 M30 M33	(1") (1-1/8") (1- 1/4")	30 33 36	46.3 68.0 89.7	44.7 65.9 87.0
	500	730	44	660	615	4	20	M33	(1-1/4")	36	138	134
ND-40	10 15 20	90 95 105	16 16 16	60 65 75	40 45 58	2 2 2	4 4 4	M12 M12 M12	(1/2") (1/2") (1/2")	14 14 14	0.72 0.81 1.24	0.62 0.74 1.05
	25 32 40	115 140 150	18 18 18	85 100 110	68 78 88	2 2 2	4 4 4	M12 M12 M12	(1/2") (5/8") (5/8")	14 18 18	1.38 2.03 2.35	1.31 1.82 2.11
	50 65 80	165 185 200	20 22 24	125 145 160	102 122 138	3 3 3	4 8 8	M16 M16 M16	(5/8") (5/8") (5/8")	18 18 18	3.20 4.29 5.88	2.91 4.13 5.21
	100 125 150	235 270 300	24 26 28	190 220 250	162 188 218	3 3 3	8 8 8	M20 M24 M24	(3/4") (7/8") (7/8")	23 27 27	7.54 10.8 14.5	7.08 10.4 13.9
	175 200 250	350 375 450	32 34 38	295 320 385	260 285 345	3 3 3	12 12 12	M27 M27 M27	(1") (1") (1-1/8")	30 30 30	22.1 27.2 43.8	21.3 26.2 43.1
	300 350 400	515 580 660	42 46 50	450 510 585	410 465 535	4 4 4	16 16 16	M30 M33 M36	(1-1/8") (1-1/8") (1-1/8")	33 36 39	63.3 89.5 127	62.2 87.2 124
	500	755	52	670	615	4	20	M39	(1-1/2")	42	172	168

DIN 2576
FLANGES, SLIP-ON TYPE FOR BRITISH OR WELDING NOMINAL PRESSURE 10

Pipe		Flange				Bolts				Weight of one flange 7.85 kg/ dm3) kg
NW	d1	ds	D	b1	k	Number	Thread		d2	Weight of one flange 7.85 kg/ dm3) kg
10	14 17.2)	14.5 17.7	90	14	60	4	M12	(1/2")	14	0.613 0.605
15	20 21.3)	20.5 21.8	95	14	65	4	M12	(1/2")	14	0675 0.669
20	25 26.9)	25.5 27.4	105	16	75	4	M12	(1/2")	14	0.947 0.936
25	30 33.7)	30.5 34.2	115	16	85	4	M12	(1/2")	14	1.14 1.11
32	38 42.4)	38.5 42.9	140	16	100	4	M16	(5/8")	18	1.66 1.62
40	44.5 48.3)	45 48.8	150	16	110	4	M16	(5/8")	18	1.89 1.86
50	57 60.3)	57.5 60.8	165	18	125	4	M16	(5/8")	18	2.51 2.47
65	76.1)	76.6	185	18	145	4	M16	(5/8")	18	3.00
80	88.9)	89.4	200	20	160	4	M16	(5/8")	18	3.79
100	108 114.3)	108.5 114.8	220	20	180	8	M16	(5/8")	18	4.20 4.03
125	133 139.7)	133.5 140.2	250	22	210	8	M16	(5/8")	18	5.71 5.46
150	159 168.3)	159.5 168.8	285	22	210	8	M16	(3/4")	23	6.72 6.57
175	191 193.7)	192 194.7	315	24	270	8	M20	(3/4")	23	8.60 8.45
200	216 219.1)	216 220.1	340	24	295	8	M20	(3/4")	23	9.50 9.31
250	267 273)	268 274	395	26	350	12	M20	(3/4")	23	12.5 11.9
400	406.4 419	407.4 420	565	32	515	16	M24	(7/8")	27	27.9 25.9
500	508) 521	509 522	670	38	620	20	M24	(7/8")	27	37.9 41.1

DIN 2632
WELDING NECK FLANGES FOR NOMINAL PRESSURE 10

Pipe		Flange				Neck				Raised face		Bolts				Weight of one flange 7.85 kg/dm3) kg
NW	d1	D	b	k	h1	d3	s	f	h2	d4	f	No.	Thread		d2
200	216	340	24	295	62	232	5.9	10	16	268	3	8	M20	(3/4")	23	11.3
	219.1					235
250	267	395	26	350	68	285	6.3	12	16	320	3	12				14.7
	273					295
300	318	445	26	400	68	335	7.1	12	16	370	4					17.6
	323.9					344
350	355.6	505	26	460	68	385	7.1	12	16	430	4	16	M24	(3/8")	27
	368															21.4
400	406.4	565	26	515	72	440	7.1	12	16	482	4
	419															26.1
500	508	670	28	620	75	542	7.1	12	16	585	4	20
	521															34.7
600	609.6	780	28	725	80	642	7.1	12	18	685	5		M27	(1")	30
	622															42.2

DIN 2633
WELDING NECK FLANGES NOMINAL PRESSURE 16

Pipe		Flange				Neck				Raised face		Bolts				Weight of one flange 7.85 kg/dm3) kg
NW	d1	D	b	k	h1	d3	s	r	h2	d4	f	No.	Thread		d2
10	14	90	14	60	35	25	1.8	4	6	40	2	4	M12	(1/2")	14	0.580
	17.2					28
15	20	95	14	65	35	30	2	4	6	45	2					0.648
	21.3					32
20	25	105	16	85	38	42	2.3	4	6	58	2					0.952
	26.9					45
25	30	115	16	85	38	42	2.6	4	6	68	2					1.14
	33.7					45
32	38	140	16	100	40	52	2.6	4	6	78	2		M16	(5/8")	18	1.69
	42.4					56
40	44.5	150	16	100	40	60	2.6	6	6	88	3					1.86
	48.3					64
50	57	165	18	125	45	72	2.9	6	8	102	3					2.53
	60.3					75
65	76.1	185	18	145	45	90	2.9	6	10	122	3					306
80	88.9	200	20	160	50	105	3.2	8	10	138	3	4/8				3.70
100	108	220	20	180	52	125	3.6	8	12	158	3	8				4.62
	114.3					131
125	133	250	22	210	55	150	4	8	12	188	3					6.30
	139.7					156
150	159	285	22	240	55	150	4	8	12	188	3		M20	(3/4")	23	7.75
	168.3					156
175	191	315	24	270	60	208	5.4	10	12	242	3	8	M20	(3/4")	23	10.0
	193.7					210
200	216	340	24	295	62	232	5.9	10	16	268	3	12
	219.1					235										11.0
250	267	405	26	355	70	285	6.3	12	16	320	3		M24	(7/8")	27	15.6
	273					292
300	318	460	28	410	78	388	7.1	12	16	378	4					22.0
	323.9					344
350	355.6	520	30	470	82	390	8	12	16	438	4	16
	368															28.7
400	406.4	580	32	525	85	445	8	12	16	490	4		M27	(1")	30
	419															36.3
500	508	715	34	650	90	548	8	12	16	610	4	20	M30	(1-1/8")	33
	521															59.3
600	609.6	840	36	770	95	652	8.8	12	18	725	5		M33	(1-1/4")	36
	622															73.4
700	711.2	910	36	840	100	755	8.8	12	18	795	5	24
	720															75.0
800	812.8	1025	38	950	105	855	10	12	20	900	5		M36	(1-3/8")	39
	820															99.0
900	914.4	1125	40	1050	110	955	10	12	20	1000	5	28
	920															119
1000	1016	1255	42	1170	120	1058	10	16	22	1115	5		M39	(1-1/2")	42
	1020															159

DIN 2634
WELDING NECK FLANGE NOMINAL PRESSURE 25

Pipe		Flange				Neck				Raised face		Bolts				Weight of one flange (7.85 kg/dm3) kg.
NW	d1	D	b	k	h1	d3	s	r	h2	d4	f	No.	Thread		d2
175	(191)	330	28	280	75	215	5.6	10	15	248	3	12	M24	(7/8")	27	13.4
	193.7					218
200	216	360	30	310	80	240	6.3	10	16	278	3					17.0
	219.1					244
250	267	425	32	370	88	292	7.1	12	18	335	3		M27	(1")	30	24.4
	273					298
300	318	485	34	430	92	345	8	12	18	395	4	16
	323.9					352										31.2
350	355.6	555	38	490	100	398	8	12	20	450	4		M30	(1-1/8")	33
	368															45.0
400	406.4	620	40	550	110	452	8.8	12	20	505	4
	419															58.7
500	508	730	44	660	125	558	10	12	20	615	4	20	M33	(1-1/4")	36
	521															86.1
600	609.6	845	46	770	125	660	11	12	20	720	5		M36	(1-3/8")	39
	622															101

DIN 2642, DIN Connections
LOOSE FLANGE FOR FLANGE COLLAR PN 10

Nom Pipe size	Flange D mm	d5 mm	b mm	r mm	k mm	Drilling Number	d2 mm	Weight kg	Collar g mm
10 15 20	90 95 105	16 23 28	16 16 16	5 5 5	60 65 75	4 4 4	15 15 15	0.23 0.26 0.30	45 50 60
25 32 40	115 140 150	33 42 50	16 16 16	5 5 5	85 100 110	4 4 4	15 18 18	0.37 0.54 0.5	70 82 0.92
50 65 80	165 185 200	62 81 94	18 18 20	5 5 5	125 145 160	4 4 4	18 18 18	0.80 0.90 1.28	107 127 142
100 125 150	220 250 285	113 138 164	20 22 22	5 6 6	180 210 240	8 8 8	18 18 22	1.37 1.78 2.27	162 192 218
175 200 250	315 340 395	195 222 273	24 24 26	6 7 7	270 295 350	8 8 12	22 22 22	2.90 3.16 4.22	248 273 328
300 350 400	445 505 565	324 374 426	26 26 32	7 8 8	400 460 515	12 16 16	22 22 25	4.80 5.85 8.45	378 438 490
450 500 600	615 670 780	475 530 630	32 34 36	8 8 10	565 620 725	20 20 20	25 25 30	9.45 11.35 15.30	540 595 695
700 800	895 1015	730 832	40 44	10 10	840 950	24 24	30 34	21.40 30.50	810 916

DIN 2635
WELDING NECK FLANGES NOMINAL PRESSURE 40

Pipe		Flange				Neck				Raised		Bolts				Weight of one flange 7.85 kg/dm3) kg
NW	d1	D	b	k	h1	d3	s	r	h2	d4	f	No.	Thread		d2
10	14	90	16	60	35	25	1.8	4	6	40	2	4	M12	(1/2")	14	0.661
	17.2					28
15	20	95	16	65	38	30	2	4	6	45	2					0.746
	21.3					32
20	25	105	18	75	40	38	2.3	4	6	58	2					106
	26.9					40
25	30	115	18	85	40	42	2.6	4	6	68	2					1.29
	33.7					46
32	38	140	18	100	42	52	2.6	6	6	78	2					1.88
	42.4					56
40	44.5	150	18	110	45	60	2.6	6	7	88	3					2.33
	48.3					64
50	57	165	20	125	48	72	2.9	6	8	102	3		M16	(5/8")	18	2.82
	60.3					75
65	76.1	185	22	145	52	90	2.9	6	10	122	3					3.74
80	88.9	200	24	160	58	105	3.2	8	12	138	3					4.75
100	108	235	24	190	65	128	3.6	8	12	138	3	8	M20	(3/4")	23	6.52
	114.3					134
125	133	270	26	220	68	155	4	8	12	188	3	8	M24	(7/8")	27	9.07
	139.7					162
150	159	300	28	250	75	182	4.5	10	12	188	3		M24	(7/8")		11.8
	168.3					192
175	191	350	32	295	82	215	5.6	10	16	285	3	12	M27	(1")	30	18.2
	193.7					218
200	216	375	34	320	88	240	6.3	10	16	285	3					21.5
	219.1					244
250	267	450	38	385	105	298	7.1	12	18	345	3					34.9
	273					306
300	318	515	42	450	115	352	8	12	18	410	4	16	M30	(1-1/8")	33	49.7
	323.9					362
350	355.6	580	46	510	125	408	8.8	12	20	460	4		M33	(1-1/4")	36
	368															68.1
400	406.4	660	50	585	135	462	11	12	20	535	4		M36	(1-3/8")	39
	419															96.5
500	508	755	52	670	140	562	14.2	12	20	615	4	20	M39	(1-1/2")	42
	521															117


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