Flange weight calculator

Complete weight chart table for blind/ weld neck/ slip on/ threaded and lap joint flanges

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	Weight of Slip On flange
NPS	150#	300#	400#	600#	NPS	900#	1500#
½	1	2	2	2	½	6	6
¾	2	3	3	3	¾	6	6
1	2	3	3.5	4	1	7.5	8
1¼	3	4.5	4.5	5	1¼	10	10
1½	3	6.5	6.5	7	1½	14	14
2	5	7	8	9	2	22	25
2½	8	10	12	13	2½	31	36
3	9	13	15	16	3	36	48
3½	11	17	21	21	4	53	73
4	13	23.5	26	37	5	83	132
5	15	29	31	63	6	110	165
6	19	39	44	80	8	172	260
8	30	58	67	115	10	245	436
10	43	81	91	177	12	326	667
12	64	115	130	215	14	400	940
14	90	165	191	259	16	459	1250
16	106	210	253	366	18	647	1625
18	130	253	310	476	20	792	2050
20	165	315	378	612	24	1480	2825
22	185	370	405	590
24	220	490	539	876

A free calculator to calculate weight of stainless steel forged flanges for class 15#-2500#

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	Weight of Threaded flange
NPS	150#	300#	400#	600#	NPS	900#	1500#	NPS	2500 lb
½	1	2	2	2	½	6	6	½	7
¾	2	3	3	3	¾	6	6	¾	9
1	2	3	3.5	4	1	7.5	8	1	12
1¼	3	4.5	4.5	5	1¼	10	10	1¼	18
1½	3	6.5	6.5	7	1½	14	14	1½	25
2	5	7	8	9	2	22	25	2	38
2½	8	10	12	13	2½	31	36	2½	55
3	9	14	15	16	3	36	48	3	83
3½	12	17	21	21	4	53	73	4	127
4	13	24	26	37	5	83	132	5	210
5	15	31	31	63	6	110	165	6	323
6	19	39	44	80	8	172	260	8	485
8	30	58	67	115	10	245	436	10	925
10	43	81	91	177	12	326	667	12	1300
12	64	115	130	215	14	400	940
14	90	165	191	259	16	459	1250
16	98	220	253	366	18	647	1625
18	130	280	310	476	20	792	2050
20	165	325	378	612	24	1480	2825
22	185	370	405	590
24	220	490	539	876

Quality always vary for forged steel flange weight, find weight & dimensions for all ferrous/ non ferrous flange material

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	Weight of Socket Weld flange
NPS	150#	300#	400#	600#	NPS	900#	1500#
½	2	3	2	2	½	6	6
¾	2	3	3	3	¾	6	6
1	2	3	3.5	4	1	7.5	8
1¼	3	4	4.5	5	1¼	10	10
1½	3	6	6.5	7	1½	14	14
2	5	7	8	9	2	22	25
2½	8	10	12	13	2½	31	36
3	9	13	15	16	3	36	48
3½	11	17	21	21	4	53	73
4	13	22	26	37	5	83	132
5	15	28	31	63	6	110	165
6	19	39	44	80	8	172	260
8	30	58	67	115	10	245	436
10	43	81	91	177	12	326	667
12	64	115	130	215	14	400	940
14	90	165	191	259	16	459	1250
16	98	190	253	366	18	647	1625
18	130	250	310	476	20	792	2050
20	165	315	378	612	24	1480	2825
22	185	370	405	590
24	220	475	539	876

Contact our technical team to get material wise weight for all size of steel flanges, manufactured as per ASME B16.5 & ANSI B16.47

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	Weight of Lap Joint flange
NPS	150#	300#	400#	600#	NPS	900#	1500#	NPS	2500 lb
½	1	2	2	2	½	6	6	½	7
¾	2	3	3	3	¾	6	6	¾	8
1	2	3	3.5	4	1	7.5	8	1	12
1¼	3	4.5	4.5	5	1¼	10	10	1¼	17
1½	3	6.5	6.5	7	1½	14	14	1½	24
2	5	7	8	9	2	21	25	2	37
2½	8	10	11	12	2½	25	35	2½	53
3	9	14.5	14	15	3	29	47	3	80
3½	11	17	20	20	4	51	75	4	122
4	13	24	25	36	5	81	140	5	204
5	15	28	29	63	6	105	170	6	314
6	19	39	42	78	8	190	286	8	471
8	30	58	64	112	10	277	485	10	897
10	43	91	110	195	12	371	749	12	1262
12	64	140	152	240	14	415	890
14	105	190	210	290	16	488	1250
16	140	234	280	400	18	670	1475
18	160	305	345	469	20	868	1775
20	195	375	420	604	24	1659	2825
22	245	435	455	670
24	275	550	615	866

Looking for extra heavy forged flanges? Manifold is a leading maufacturer of pipe flanges, explore all types of flange & technical data

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	Weight of Blind flange
NPS	150#	300#	400#	600#	NPS	900#	1500#	NPS	2500 lb
½	2	2	2	3	½	4	4	½	7
¾	2	3	3	4	¾	6	6	¾	10
1	2	4	4	4	1	9	9	1	12
1¼	3	6	6	6	1¼	10	10	1¼	18
1½	4	7	8	8	1½	14	14	1½	25
2	5	8	10	10	2	25	25	2	39
2½	7	12	15	15	2½	32	35	2½	56
3	9	16	20	20	3	35	48	3	86
3½	13	21	29	29	4	54	73	4	133
4	17	28	33	41	5	87	140	5	223
5	20	37	44	68	6	115	160	6	345
6	27	50	61	86	8	200	302	8	533
8	47	81	100	140	10	290	510	10	1025
10	70	124	155	231	12	415	775	12	1464
12	123	185	226	295	14	520	975
14	140	250	310	378	16	619	1300
16	180	315	398	527	18	880	1750
18	220	414	502	665	20	1107	2225
20	285	515	621	855	24	2099	3625
22	355	640	720	1000
24	430	800	936	1250

 

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	Weight of Weld Neck flange
NPS	150#	300#	400#	600#	NPS	900#	1500#	NPS	2500 lb
½	2	2	3	3	½	7	7	½	8
¾	2	3	3.5	4	¾	7	7	¾	9
1	3	4	4	4	1	8.5	9	1	13
1¼	3	5	4.5	6	1¼	10	10	1¼	20
1½	4	7	8	8	1½	14	14	1½	28
2	6	9	10	12	2	24	25	2	42
2½	10	12	14	18	2½	31	36	2½	52
3	11.5	18	18	23	3	36	48	3	94
3½	12	20	26	26	4	53	73	4	146
4	16.5	26.5	35	42	5	86	132	5	244
5	21	36	43	68	6	110	165	6	378
6	26	45	57	81	8	187	275	8	576
8	42	69	89	120	10	268	455	10	1068
10	54	100	125	190	12	372	690	12	1608
12	88	142	175	226	14	562	940
14	114	206	233	347	16	685	1250
16	140	250	295	481	18	924	1625
18	165	320	360	555	20	1164	2050
20	197	400	445	690	24	2107	3325
22	225	465	505	720
24	268	580	640	977