4" A182 F51 B16.36 Duplex Stainless Steel 316L Orifice Weld Neck Forging Flange

Our company is constantly absorbing and transforming capabilities to integrate our internal and external technologies to form a more complex technology portfolio to create new Pipe Filter, ANSI API6D Gate Valve, Stainless Steel Elliptical Man Hole Cover. We take technological innovation as the forerunner, abide by the principle of mutual benefit and sincere service, to provide customers with the best quality products and service. We are adhering to the corporate tenet of 'creating value', and the perfect sales channels, service systems and marketing networks ensure our professional image. Information is changing rapidly, products are changing with each passing day, and what remains unchanged is our professional service concept for customers. We insist on pioneering and innovation, and always take innovation as the driving force of enterprise development.

PN 1.0MPa (10 pressure) flat welded steel pipe flange(PL -RF)

Special flange for elastic butterfly valve, wafer butterfly valve (D371) and wafer check valve (H76)

Norminal Diameter	Pipe Outside Diameter		Link Size					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	12	18	15	3	0.46
15	21.3	18	95	65	14	4	M12	45	2	12	22	19	3	0.51
20	26.9	25	105	75	14	4	M12	55	2	14	27.5	26	3	0.75
25	33.7	32	115	85	14	4	M12	65	2	14	34.5	33	4	0.89
32	42.4	38	140/135	100	18	4	M16	78	2	16	43.5	39	4	1.40
40	48.3	45	150/145	110	18	4	M16	85	3	18	49.5	46	4	1.71
50	60.3	57	165/160	125	18	4	M16	100	3	18	61.5	59	4	2.09
65	76.1	76	185/180	145	18	4	M16	120	3	20	77.5	78	5	2.84
80	88.9	89	200/195	160	18	8	M16	135	3	20	90.5	91	5	3.24 reference
100	114.3	108	220/215	180	18	8	M16	155	3	22	116	110	5	4.01
125	139.7	133	25Q/245	210	18	8	M16	185	3	24	141.5	135	5	5.40
150	168.3	159	285/280	240	22/23	8	M20	210	3	24	170.5	161	5	6.67
175		194	310	270	22/23	8	M20	240	3	24		196	6	7.44
200	219.1	219	340/335	295	22/23	12	M20	265	3	24	221.5	222	7	8.24
225		245	365	325	22/23	12	M20	295	3	24		248	8	9.30
250	273	273	405	355	22/23	12	M20	320	3	26	276.5	276	9	10.7
300	323.9	325	460	410	22/23	12	M20	375	4	28	327.5	328	9	12.9
350	355.6	377	520	470	22/23	16	M20	436	4	28	359.5	380	10	15.9
400	406.4	426	580	525	26/25	16	M24/M22	485	4	30	411	430	10	21.8
450	457	480	640	585	26/25	20	M24/M22	545	4	30	462	484	10	24.4
500	508	530	715/705	650	26/25	20	M24/M22	608	4	32	513.5	534	10	27.7
600	610	630	840	770	30	20	M27	718	5	36	616.5	634	10	39.4
700	711	720	910	840	30	24	M27	788	5	36	715	724	10	53
800	813	820	1025/1020	950	34	24	M30	898	5	38	817	824	10	67
900	914	920	1125/1120	1050	34	28	M30	998	5	38	918	924	10	76 reference resources
1000	1016	1020	1255	1170	36/34	28	M33/M30	1110	5	38	1020	1024	10	90 reference
1100		1120	1355	1270	36	32	M33	1215	5	42		1124	12	125 reference
1200	1219	1220	1485	1390	39/41	32	M36	1325	5	44	1223	1224	12	143 reference
1300		1320	1585	1490	41	32	M36	1425	5	46		1324	12	180 reference
1400	1422	1420	1685	1590	42/48	36	M39/M42	1525	5	48	1426	1424	14	195 reference
1500		1520	1820	1710	48	36	M42	1640	5	50		1524	14	225 reference
1600	1626	1620	1930	1820	48/54	40	M45/M48	1750	5	52	1630	1624	16	275 reference
1750			2080	1970	54	44	M48	1900	5	54			16	310 reference
1800	1829	1820	2130	2020	48/54	44	M45/M48	1950	5	56	1833	1824	17	340 reference
2000	2032	2020	2345	2230	48/54	48	M45/M48	2150	5	60	2036	2024	18	420 reference
2200		2220	2555	2440	56	52	M52	2370	6	80		2224	20	660 reference
2400		2420	2765	2650	56	56	M52	2570	6	90		2424	20	840 reference

PN 1.6MPa (16 pressure) flat welded steel pipe flange(PL -RF)

Norminal Diameter	Pipe Outside Diameter		Link Sice					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	14	18	15	3	0.55
15	21.3	18	95	65	14	4	M12	45	2	14	22	19	3	0.71
20	26.9	25	105	75	14	4	M12	55	2	16	27.5	26	3	0.87
25	33.7	32	115	85	14	4	M12	65	2	18	34.5	33	4	1.18
32	42.4	38	140/135	100	18	4	M16	78	2	18	43.5	39	4	1.60
40	48.3	45	150/145	110	18	4	M16	85	3	20	49.5	46	4	2.00
50	60.3	57	165/160	125	18	4	M16	100	3	22	61.5	59	4	2.61
65	76.1	76	185/180	145	18	4	M16	120	3	24	77.5	78	5	3.45
80	88.9	89	200/195	160	18	8	M16	135	3	24	90.5	91	5	3.71
100	114.3	108	220/215	180	18	8	M16	155	3	26	116	110	5	4.80
125	139.7	133	25Q/245	210	18	8	M16	185	3	28	141.5	135	5	6.47
150	168.3	159	285/280	240	22/23	8	M20	210	3	28	170.5	161	5	7.92
175		194	310	270	22/23	8	M20	240	3	28		196	6	8.81
200	219.1	219	34QZ335	295	22/23	12	M20	265	3	30	221.5	222	7	10.10
225		245	365	325	22/23	12	M20	295	3	30		248	8	11.20
250	273	273	405	355	26/25	12	M24/M22	320	3	32	276.5	276	9	15.70
300	323.9	325	460	410	26/25	12	M24^M22	375	4	32	327.5	328	9	18.10
350	355.6	377	520	470	26/25	16	M24/M22	436	4	34	359.5	380	10	23.30
400	406.4	426	580	525	30	16	M27	485	4	38	411	430	10	31.00
450	457	480	640	585	30	20	M27	545	4	42	462	484	10	40.20
500	508	530	715/705	650	34	20	M30	608	4	48	513.5	534	10	55.20
600	610	630	840	770	36/41	20	M33/M36	718	5	50	616.5	634	10	80.80
700	711	720	910	840	36/41	24	M33/M36	788	5	50	715	724	10	106.2
800	813	820	1025/1020	950	39/41	24	M36	898	5	52	817	824	10	130.5
900	914	920	1125/1120	1050	39/41	28	M36	998	5	44	918	924	10	91reference
1000	1016	1020	1255	1170	42/48	28	M39/M42	1110	5	46	1020	1024	10	127reference
1100		1120	1355	1270	42	32	M39	1215	5	50		1124	12	150reference
1200	1219	1220	1485	1390	48/54	32	M45/M48	1325	5	52	1223	1224	12	186reference
1300		1320	1585	1490	48	32	M45	1425	5	54		1324	12	215reference
1400	1422	1420	1685	1590	48/54	36	M45/M48	1525	5	58	1426	1424	14	245reference
1500		1520	1820	1710	56	36	M52	1640	5	60		1524	14	32。reference
1600	1626	1620	1930	1820	55/58	40	M52	1750	5	64	1630	1624	16	360reference
1750			2080	1970	58	44	M52	1900	5	66			16	400reference
1800	1829	1820	2130	2020	55/58	44	M52	1950	5	68	1833	1824	17	430reference
2000	2032	2020	2345	2230	60	48	M56	2150	5	70	2036	2024	18	515reference
2200		2220	2555	2440	62	52	M56	2370	6	90		2224	20	750reference
2400		2420	2765	2650	62	56	M56	2570	6	100		2424	20	950reference

PN 2.5MPa (25 pressure) flat welded steel pipe flange(PL -RF)

Norminal Diameter	Pipe Outside Diameter		Link Size					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size			Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	16	18	15	3	0.64
15	21.3	18	95	65	14	4	M12	45	2	16	22	19	3	0.80
20	26.9	25	105	75	14	4	M12	55	2	18	27.5	26	3	0.9g
25	33.7	32	115	85	14	4	M12	65	2	18	34.5	33	4	1.18
32	42.4	38	140/135	100	18	4	M16	78	2	20	43.5	39	4	1.96
40	48.3	45	150/145	110	18	4	M16	85	3	22	49.5	46	4	2.60
50	60.3	57	165/160	125	18	4	M16	100	3	24	61.5	59	4	2.71
65	76.1	76	185/180	145	18	8	M16	120	3	24	77.5	78	5	3.22
80	88.9	89	200/195	160	18	8	M16	135	3	26	90.5	91	5	4.06
100	114.3	108	235/230	190	22/23	8	M20	160	3	28	116	110	5	6.00
125	139.7	133	270	220	26/25	8	M24/M22	188	3	30	141.5	135	5	8.26
150	168.3	159	300	250	26/25	8	M24/M22	218	3	30	170.5	161	5	10.40
175		194	330	280	26/25	8	M24/M22	248	3	32		196	6	11.90
200	219.1	219	360	310	26/25	12	M24/M22	278	3	32	221.5	222	7	14.50
225		245	395	340	30	12	M27	302	3	34		248	8	17.00
250	273	273	425	370	30	12	M27	332	3	34	276.5	276	9	18.90
300	323.9	325	485	430	30	16	M27	390	4	36	327.5	328	9	26.80
350	355.6	377	555/550	490	34	16	M30	448	4	42	359.5	380	10	34.35
400	406.4	426	620/610	550	36/34	16	M33/M30	505	4	44	411	430	10	44.90
450	457	480	670/660	600	36/34	20	M33/M30	555	4	48	462	484	10	51.92
500	508	530	730	660	36/41	20	M33/M36	610	4	52	513.5	534	10	67.30
600	610	630	845/840	770	39/41	20	M36	718	5	56	616.5	634	10	95.20
700	711	720	960/955	875	42/48	24	M39/M42	815	5	60	715	724	10	116
800	813	820	1085/1070	990	48	24	M45/M42	930	5	64	817	824	10	150.2
900	914	920	1185/1180	1090	48/54	28	M45/M48	1025	5	58	918	924	10	160reference
1000	1016	1020	1320/1305	1210	55/58	28	M52	1140	5	62	1020	1024	10	210reference
1100		1120	1420	1310	56	32	M52	1240	5	66		1124	12	255reference
1200	1219	1220	1530/1525	1420	55/58	32	M52	1350	5	70	1223	1224	12	300 reference
1300		1320	1645	1530	62	32	M56	1450	5	74		1324	12	355reference
1400	1422	1420	1755/1750	1640	60/65	36	M56	1560	5	76	1426	1424	14	450reference
1500		1520	1865	1750	62	36	M56	1670	5	80		1524	16	480 reference
1600	1626	1620	1975	1860	60	40	M56	1780	5	84	1630	1624	16	570reference
1800	1829	1820	2195	2070	68	44	M64	1985	5	90	1833	1824	17	700reference
2000	2032	2020	2425	2300	68	48	M64	2210	5	96	2036	2024	18	900reference

Product Description:

Corresponding standards of flat welded steel pipe flange series: GB / T9119-2000,JB81-94, HGJ45-91, HG20593-97

Welding flange material: 201,304,316,316l,321,202, carbon steel, alloy steel, etc

The sealing surfaces of flange with neck are as follows: RF, FM,M, T, G, FF.

Diameter range of flat welding flange with neck: DN 100 ~ DN 600

Advantages:

flat welding flange with neck also belongs to flat welding flange, because it has a short neck, so as to improve the strength of the flange and the bearing strength of the flange. So it can be used in higher pressure pipes.

Disadvantages:

compared with flat plate flange, the cost is higher, because of its shape characteristics, it is easier to bump during transportation

Application:

it is widely used in chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, water heating, fire protection, electric power, aerospace, shipbuilding and other basic engineering.

Price

Our price fluctuates with raw materials and exchange rate.Please leave your contact information and give you a new quotation as soon as possible.

Packing

wooden case, wooden pallet or packing method specified by customers.

Note: we can produce products of various standards, models and materials according to user's requirements

The world's advanced production technology and testing technology ensure the high quality of our 4" A182 F51 B16.36 Duplex Stainless Steel 316L Orifice Weld Neck Forging Flange. Our company will adhere to 'Quality first, , perfection forever, people-oriented, technology innovation' business philosophy. With the tenet of 'quality first, customer first, honesty first', and the business philosophy of 'leading technology, innovation and sharing win-win', our company constantly strengthens product quality management and improves the demand level of customer service.

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