At Venus Special Metals, we are highly engaged in offering a wide range of Stainless Steel Weld Neck Flanges. These SS Welded Neck Flanges are manufactured and designed in a diverse range of sizes and grades like 304, 316, 304L, 316L, 310 etc.

Our range includes Steel Raised Weld Neck Flanges or WNRF Flanges which are widely used establish the connection of pipes and deliver the maximum level of stability in the functionality of these vital structures. Moreover, our product ensures accuracy and precision so that our clients get value for their money. Clients can avail this product at industry leading prices from us.

We offer the leverage to our clients to make the order according to their specifications and requirements. Our offered range of Stainless steel raised face weld neck flanges are used to block the end of a pipe system or valve. They are widely used in power plant, chemical & food, and drilling & well building industries. Contact us today to request a free quote or send an inquiry!

STAINLESS STEEL 304 WELD NECK FLANGE, SS 310 WELD NECK FLANGE, SS UNS S30400/ S31000 FLANGES, STAINLESS STEEL WERKSTOFF NR. 1.4301 / 1.4401 PIPE FLANGES MANUFACTURER & SUPPLIER

Dimensions	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc.
Standard	ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Class	150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Size	1/8″ NB TO 48″NB.
Types of Flanges	Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN	DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
BS	BS4504 , BS4504, BS1560, BS10

Stainless Steel Weld Neck Flanges

ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L

ANSI/ASME B16.5 Class 150 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thick.	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	90	9.6	30	21.3	46	34.9	2	60.3	1.6
3/4	20	100	11.2	38	26.7	51	42.9	2	69.9	1.6
1	25	110	12.7	49	33.4	54	50.8	2	79.4	1.6
1 1/4	32	115	14.3	59	42.2	56	63.5	2	88.9	1.6
1 1/2	40	125	15.9	65	48.3	60	73	2	98.4	1.6
2	50	150	17.5	78	60.3	62	92.1	2	120.7	1.6
2 1/2	65	180	20.7	90	73	68	104.8	2	139.7	1.6
3	80	190	22.3	108	88.9	68	127	2	152.4	1.6
3 1/2	90	215	22.3	122	101.6	70	139.7	2	177.8	1.6
4	100	230	22.3	135	114.3	75	157.2	2	190.5	1.6
5	125	255	22.3	164	141.3	87	185.7	2	215.9	1.6
6	150	280	23.9	192	168.3	87	215.9	2	241.3	1.6
8	200	345	27	246	219.1	100	269.9	2	298.5	1.6
10	250	405	28.6	305	273	100	323.8	2	362	1.6
12	300	485	30.2	365	323.8	113	381	2	431.8	1.6
14	350	535	33.4	400	355.6	125	412.8	2	476.3	1.6
16	400	595	35	457	406.4	125	469.9	2	539.8	1.6
18	450	635	38.1	505	457.2	138	533.4	2	577.9	1.6
20	500	700	41.3	559	508	143	584.2	2	635	1.6
24	600	815	46.1	663	610	151	692.2	2	749.3	1.6

ANSI/ASME B16.5 Class 150 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	Machine Bolt Length	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
1/2	15	4	1/2	50	55	5/8	M14	0.6
3/4	20	4	1/2	50	65	5/8	M14	0.9
1	25	4	1/2	55	65	5/8	M14	1.4
1 1/4	32	4	1/2	55	70	5/8	M14	1.4
1 1/2	40	4	1/2	65	70	5/8	M14	1.8
2	50	4	5/8	70	85	3/4	M16	2.7
2 1/2	65	4	5/8	75	90	3/4	M16	3.7
3	80	4	5/8	75	90	3/4	M16	4.6
3 1/2	90	8	5/8	75	90	3/4	M16	5.5
4	100	8	5/8	75	90	3/4	M16	6.8
5	125	8	3/4	85	95	7/8	M20	8.7
6	150	8	3/4	85	100	7/8	M20	10.9
8	200	8	3/4	90	110	7/8	M20	17.7
10	250	12	7/8	100	115	1	M24	24
12	300	12	7/8	100	120	1	M24	37
14	350	12	1	115	135	1 1/8	M27	50
16	400	16	1	115	135	1 1/8	M27	64
18	450	16	1 1/8	125	145	1 1/4	M30	68
20	500	20	1 1/8	140	160	1 1/4	M30	82
24	600	20	1 1/4	150	170	1 3/8	M33	118

ANSI/ASME B16.5 Class 300 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thick.	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	95	12.7	38	21.3	51	34.9	2	66.7	1.6
3/4	20	115	14.3	48	26.7	56	42.9	2	82.6	1.6
1	25	125	15.9	54	33.4	60	50.8	2	88.9	1.6
1 1/4	32	135	17.5	64	42.2	64	63.5	2	98.4	1.6
1 1/2	40	155	19.1	70	48.3	67	73	2	114.3	1.6
2	50	165	20.7	84	60.3	68	92.1	2	127	1.6
2 1/2	65	190	23.9	100	73	75	104.8	2	149.2	1.6
3	80	210	27	117	88.9	78	127	2	168.3	1.6
3 1/2	90	230	28.6	133	101.6	79	139.7	2	184.2	1.6
4	100	255	30.2	146	114.3	84	157.2	2	200	1.6
5	125	280	33.4	178	141.3	97	185.7	2	235	1.6
6	150	320	35	206	168.3	97	215.9	2	269.9	1.6
8	200	380	39.7	260	219.1	110	269.9	2	330.2	1.6
10	250	445	46.1	321	273	116	323.8	2	387.4	1.6
12	300	520	49.3	375	323.8	129	381	2	450.8	1.6
14	350	585	52.4	425	355.6	141	412.8	2	514.4	1.6
16	400	650	55.6	483	406.4	144	469.9	2	571.5	1.6
18	450	710	58.8	533	457	157	533.4	2	628.6	1.6
20	500	775	62	587	508	160	584.2	2	685.8	1.6
24	600	915	68.3	702	610	167	692.2	2	812.8	1.6

ANSI/ASME B16.5 Class 300 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	Machine Bolt Length	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
1/2	15	4	1/2	55	65	5/8	M14	1.4
3/4	20	4	5/8	65	75	3/4	M16	1.4
1	25	4	5/8	65	75	3/4	M16	1.8
1 1/4	32	4	5/8	70	85	3/4	M16	2.3
1 1/2	40	4	3/4	75	90	7/8	M20	3.2
2	50	8	5/8	75	90	3/4	M16	4.1
2 1/2	65	8	3/4	85	100	7/8	M20	5.5
3	80	8	3/4	90	110	7/8	M20	6.8
3 1/2	90	8	3/4	95	110	7/8	M20	8.2
4	100	8	3/4	95	115	7/8	M20	11.4
5	125	8	3/4	110	120	7/8	M20	14.6
6	150	12	3/4	110	120	7/8	M20	19.1
8	200	12	7/8	120	140	1	M24	31
10	250	16	1	140	160	1 1/8	M27	42
12	300	16	1 1/8	145	170	1 1/4	M30	64
14	350	20	1 1/8	160	180	1 1/4	M30	82
16	400	20	1 1/4	165	190	1 3/8	M33	113
18	450	24	1 1/4	170	195	1 3/8	M33	145
20	500	24	1 1/4	185	205	1 3/8	M33	182
24	600	24	1 1/2	205	230	1 5/8	M39	264

ANSI/ASME B16.5 Class 400 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	95	14.3	38	21.3	52	34.9	7	66.7	1.6
3/4	20	115	15.9	48	26.7	57	42.9	7	82.6	1.6
1	25	125	17.5	54	33.4	62	50.8	7	88.9	1.6
1 1/4	32	135	20.7	64	42.2	67	63.5	7	98.4	1.6
1 1/2	40	155	22.3	70	48.3	70	73	7	114.3	1.6
2	50	165	25.4	84	60.3	73	92.1	7	127	1.6
2 1/2	65	190	28.6	100	73	79	104.8	7	149.2	1.6
3	80	210	31.8	117	88.9	83	127	7	168.3	1.6
3 1/2	90	230	35	133	101.6	86	139.7	7	184.2	1.6
4	100	255	35	146	114.3	89	157.2	7	200	1.6
5	125	280	38.1	178	141.3	102	185.7	7	235	1.6
6	150	320	41.3	206	168.3	103	215.9	7	269.9	1.6
8	200	380	47.7	260	219.1	117	269.9	7	330	1.6
10	250	445	54	321	273	124	323.8	7	387.4	1.6
12	300	520	57.2	375	323.8	137	381	7	450.8	1.6
14	350	585	60.4	425	355.6	149	412.8	7	514.4	1.6
16	400	650	63.5	483	406.4	152	469.9	7	571.5	1.6
18	450	710	66.7	533	457	165	533.4	7	628.6	1.6
20	500	775	69.9	587	508	168	584.2	7	685.8	1.6
24	600	915	76.2	702	610	175	692.2	7	812.8	1.6

ANSI/ASME B16.5 Class 400 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size
1/2	15	4	1/2	75	5/8	M14
3/4	20	4	5/8	90	3/4	M16
1	25	4	5/8	90	3/4	M16
1 1/4	32	4	5/8	95	3/4	M16
1 1/2	40	4	3/4	110	7/8	M20
2	50	8	5/8	110	3/4	M16
2 1/2	65	8	3/4	120	7/8	M20
3	80	8	3/4	125	7/8	M20
3 1/2	90	8	7/8	140	1	M24
4	100	8	7/8	140	1	M24
5	125	8	7/8	145	1	M24
6	150	12	7/8	150	1	M24
8	200	12	1	170	1 1/8	M27
10	250	16	1 1/8	190	1 1/4	M30
12	300	16	1 1/4	205	1 3/8	M33
14	350	20	1 1/4	210	1 3/8	M33
16	400	20	1 3/8	220	1 1/2	M36
18	450	24	1 3/8	230	1 1/2	M36
20	500	24	1 1/2	240	1 3/4	M39
24	600	24	1 3/4	265	1 7/8	M45

ANSI/ASME B16.5 Class 600 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	95	14.3	38	21.3	52	34.9	7	66.7	1.6
3/4	20	115	15.9	48	26.7	57	42.9	7	82.6	1.6
1	25	125	17.5	54	33.4	62	50.8	7	88.9	1.6
1 1/4	32	135	20.7	64	42.2	67	63.5	7	98.4	1.6
1 1/2	40	155	22.3	70	48.3	70	73	7	114.3	1.6
2	50	165	25.4	84	60.3	73	92.1	7	127	1.6
2 1/2	65	190	28.6	100	73	79	104.8	7	149.2	1.6
3	80	210	31.8	117	88.9	83	127	7	168.3	1.6
3 1/2	90	230	35	133	101.6	86	139.7	7	184.2	1.6
4	100	275	38.1	152	114.3	102	157.2	7	215.9	1.6
5	125	330	44.5	189	141.3	114	185.7	7	266.7	1.6
6	150	355	47.7	222	168.3	117	215.9	7	292.1	1.6
8	200	420	55.6	273	219.1	133	269.9	7	349.2	1.6
10	250	510	63.5	343	273	152	323.8	7	431.8	1.6
12	300	560	66.7	400	323.8	156	381	7	489	1.6
14	350	605	69.9	432	355.6	165	412.8	7	527	1.6
16	400	685	76.2	495	406.4	178	469.9	7	603.2	1.6
18	450	745	82.6	546	457	184	533.4	7	654	1.6
20	500	815	88.9	610	508	190	584.2	7	723.9	1.6
24	600	940	101.6	718	610	203	692.2	7	1.6

ANSI/ASME B16.5 Class 600 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
1/2	15	4	1/2	75	5/8	M14	1.5
3/4	20	4	5/8	90	3/4	M16	1.8
1	25	4	5/8	90	3/4	M16	1.8
1 1/4	32	4	5/8	95	3/4	M16	2.7
1 1/2	40	4	3/4	110	7/8	M20	3.7
2	50	8	5/8	110	3/4	M16	5.5
2 1/2	65	8	3/4	120	7/8	M20	8.2
3	80	8	3/4	125	7/8	M20	10.5
3 1/2	90	8	7/8	140	1	M24	11.8
4	100	8	7/8	145	1	M24	19.1
5	125	8	1	165	1 1/8	M27	31
6	150	12	1	170	1 1/8	M27	36
8	200	12	1 1/8	190	1 1/4	M30	55
10	250	16	1 1/4	215	1 3/8	M33	86
12	300	20	1 1/4	220	1 3/8	M33	102
14	350	20	1 3/8	235	1 1/2	M36	127
16	400	20	1 1/2	255	1 5/8	M39	177
18	450	20	1 5/8	275	1 3/4	M42	216
20	500	24	1 5/8	285	1 3/4	M42	268
24	600	24	1 7/8	330	2	M48	377

ANSI/ASME B16.5 Class 900 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	120	22.3	38	21.3	60	34.9	7	82.6	1.6
3/4	20	130	25.4	44	26.7	70	42.9	7	88.9	1.6
1	25	150	28.6	52	33.4	73	50.8	7	101.6	1.6
1 1/4	32	160	28.6	64	42.2	73	63.5	7	111.1	1.6
1 1/2	40	180	31.8	70	48.3	83	73	7	123.8	1.6
2	50	215	38.1	105	60.3	102	92.1	7	165.1	1.6
2 1/2	65	245	41.3	124	73	105	104.8	7	190.5	1.6
3	80	240	38.1	127	88.9	102	127	7	190.5	1.6
4	100	290	44.5	159	114.3	114	157.2	7	235	1.6
5	125	350	50.8	190	141.3	127	185.7	7	279.4	1.6
6	150	380	55.6	235	168.3	140	215.9	7	317.5	1.6
8	200	470	63.5	298	219.1	162	269.9	7	393.7	1.6
10	250	545	69.9	368	273	184	323.8	7	469.9	1.6
12	300	610	79.4	419	323.8	200	381	7	533.4	1.6
14	350	640	85.8	451	355.6	213	412.8	7	558.8	1.6
16	400	705	88.9	508	406.4	216	469.9	7	616	1.6
18	450	785	101.6	565	457	229	533.4	7	685.8	1.6
20	500	855	108	622	508	248	584.2	7	749.3	1.6
24	600	1040	139.7	749	610	292	692.2	7	901.7	1.6

ANSI/ASME B16.5 Class 1500 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	120	22.3	38	21.3	60	34.9	7	82.6	1.6
3/4	20	130	25.4	44	26.7	70	42.9	7	88.9	1.6
1	25	150	28.6	52	33.4	73	50.8	7	101.6	1.6
1 1/4	32	160	28.6	64	42.2	73	63.5	7	111.1	1.6
1 1/2	40	180	31.8	70	48.3	83	73	7	123.8	1.6
2	50	215	38.1	105	60.3	102	92.1	7	165.1	1.6
2 1/2	65	245	41.3	124	73	105	104.8	7	190.5	1.6
3	80	265	47.7	133	88.9	117	127	7	203.2	1.6
4	100	310	54	162	114.3	124	157.2	7	241.3	1.6
5	125	375	73.1	197	141.3	156	185.7	7	292.1	1.6
6	150	395	82.6	229	168.3	171	215.9	7	317.5	1.6
8	200	485	92.1	292	219.1	213	269.9	7	393.7	1.6
10	250	585	108	368	273	254	323.8	7	482.6	1.6
12	300	675	123.9	451	323.8	283	381	7	571.5	1.6
14	350	750	133.4	495	355.6	298	412.8	7	635	1.6
16	400	825	146.1	552	406.4	311	469.9	7	704.8	1.6
18	450	915	162	597	457	327	533.4	7	774.7	1.6
20	500	985	177.8	641	508	356	584.2	7	831.8	1.6
24	600	1170	203.2	762	610	406	692.2	7	990.6	1.6

ANSI/ASME B16.5 Class 1500 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
1/2	15	4	3/4	110	7/8	M20	2.3
3/4	20	4	3/4	115	7/8	M20	2.7
1	25	4	7/8	125	1	M24	4.1
1 1/4	32	4	7/8	125	1	M24	4.6
1 1/2	40	4	1	140	1 1/8	M27	5.9
2	50	8	7/8	145	1	M24	11.4
2 1/2	65	8	1	160	1 1/8	M27	16.4
3	80	8	1 1/8	180	1 1/4	M30	21.8
4	100	8	1 1/4	195	1 3/8	M33	33
5	125	8	1 1/2	250	1 5/8	M39	59
6	150	12	1 3/8	260	1 1/2	M36	75
8	200	12	1 5/8	290	1 3/4	M42	125
10	250	12	1 7/8	335	2	M48	207
12	300	16	2	375	2 1/8	M52	314
14	350	16	2 1/4	405	2 3/8	M56	427
16	400	16	2 1/2	445	2 5/8	M64	568
18	450	16	2 3/4	495	2 7/8	M72	738
20	500	16	3	540	3 1/8	M76	932
24	600	16	3 1/2	615	3 5/8	M90	1511

ANSI/ASME B16.5 Class 2500 Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I
1/2	15	135	30.2	43	21.3	73	34.9	7	88.9	1.6
3/4	20	140	31.8	51	26.7	79	42.9	7	95.2	1.6
1	25	160	35	57	33.4	89	50.8	7	108	1.6
1 1/4	32	185	38.1	73	42.2	95	63.5	7	130.2	1.6
1 1/2	40	205	44.5	79	48.3	111	73	7	146	1.6
2	50	235	50.9	95	60.3	127	92.1	7	171.4	1.6
2 1/2	65	265	57.2	114	73	143	104.8	7	196.8	1.6
3	80	305	66.7	133	88.9	168	127	7	228.6	1.6
4	100	355	76.2	165	114.3	190	157.2	7	273	1.6
5	125	420	92.1	203	141.3	229	185.7	7	323.8	1.6
6	150	485	108	235	168.3	273	215.9	7	368.3	1.6
8	200	550	127	305	219.1	318	269.9	7	438.2	1.6
10	250	675	165.1	375	273	419	323.8	7	539.8	1.6
12	300	760	184.2	441	323.8	464	381	7	619.1	1.6

ANSI/ASME B16.5 Class 2500 Weld Neck Flange Stud & Bolt Dimensions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
1/2	15	4	3/4	120	7/8	M20	3.3
3/4	20	4	3/4	125	7/8	M20	3.7
1	25	4	7/8	140	1	M24	5.5
1 1/4	32	4	1	150	1 1/8	M27	7.8
1 1/2	40	4	1 1/8	170	1 1/4	M30	11.5
2	50	8	1	180	1 1/8	M27	19
2 1/2	65	8	1 1/8	195	1 1/4	M30	24
3	80	8	1 1/4	220	1 3/8	M33	42.8
4	100	8	1 1/2	255	1 5/8	M39	66
5	125	8	1 3/4	300	1 7/8	M45	111
6	150	8	2	345	2 1/8	M52	173
8	200	12	2	380	2 1/8	M52	264
10	250	12	2 1/2	490	2 5/8	M64	490
12	300	12	2 3/4	540	2 7/8	M72	695

Stainless Steel Class 150 Weld Neck Flanges	SS Class 300 Weld Neck Flanges
SS Class 400 Weld Neck Flanges	Stainless Steel Class 600 Weld Neck Flanges
Stainless Steel Class 900 Weld Neck Flanges	SS Class 1500 Weld Neck Flanges
SS Plate Weld Neck Flanges	Stainless Steel Ring Type Joint Weld Neck Flanges
Stainless Steel Drawing Weld Neck Flanges	SS Square Weld Neck Flanges
SS Weld Neck Raised Face Flanges	Stainless Steel WNRF Flanges
Stainless Steel Forged Weld Neck Flanges	SS Weld Neck Flat Face Flanges
SS Class 2500 Weld Neck Flanges	Stainless Steel Weld Neck Flanges

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