Weld Neck Flange

Weld Neck Flange

Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. Weld neck flange also called WN flange.

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Specification:

ASME B16.47 – 2006 CLASS 150 SERIES A
CLASS 150 Series.A		FLANGE THICKNESS			LTB	DRILLING DATA			NOMINAL PIPE SIZE
NOMINAL PIPE SIZE		FLANGE OUTSIDE DIAMETER	THICKNESS OF W/N MIN	THICKNESS OF BLIND MIN	WELD NECK LENGTH	PITCH CIRCLE DIAMETER	BOLT HOLE DIAMETER	NUMBER OF BOLTS HOLES
MM	INCH	OD	T	T1	L1	PCD	H	#	MM	INCH
650	26	870	66.7	66.7	119	806.4	35	24	650	26
700	28	925	69.9	69.9	124	863.6	35	28	700	28
750	30	985	73.1	73.1	135	914.4	35	28	750	30
800	32	1060	79.4	79.4	143	977.9	41	28	800	32
850	34	1110	81	81	148	1028.7	41	32	850	34
900	36	1170	88.9	88.9	156	1085.8	41	32	900	36
950	38	1240	85.8	85.8	156	1149.4	41	32	950	38
1000	40	1290	88.9	88.9	162	1200.2	41	36	1000	40
1050	42	1345	95.3	95.3	170	1257.3	41	36	1050	42
1100	44	1405	100.1	100.1	176	1314.4	41	40	1100	44
1150	46	1455	101.6	101.6	184	1365.2	41	40	1150	46
1200	48	1510	106.4	106.4	191	1422.4	41	44	1200	48
1250	50	1570	109.6	109.6	202	1479.6	48	44	1250	50
1300	52	1625	114.3	114.3	208	1536.7	48	44	1300	52
1350	54	1685	119.1	119.1	214	1593.8	48	44	1350	54
1400	56	1745	122.3	122.3	227	1651	48	48	1400	56
1450	58	1805	127	127	233	1708.2	48	48	1450	58
1500	60	1855	130.2	130.2	238	1759	48	52	1500	60

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Flanges Catalog

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