Stainless Steel Weld Neck Flange Welding, Weld Neck Flanges Manufacturing Company

Stainless Steel Weld Neck Flange Welding

1.Type: Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc;

2.Standard: ANSI, JIS, DIN, EN;

3.Material: 304/304L, 316/316L, 316H, 310, F321 F44 (UNS S31254)

Alloy Steel flanges ASTM A182 F1, F5a, F9, F11, F12, F22, F91;

4.Wall Thickness: Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS;

5.Pressure Rating: Class 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2000LBS, 3000LBS, 6000LBS, 9000 LBS;

6.Size: 1/2" - 24";

7.Surface treatment: antirust oil, black / yellow / transparent / electric galvanized / hot galvanized.

Stainless Steel Weld Neck Flange Welding structure

forged steel flange dimensions class150

	Nominal size	Outside diam. of flange	Thick. of flange	Diam. of raised face	Diam of hub at base	Diam. of hub at point of welding	Length thru hub	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R	X	A	Y
in.	1/2"	3.5	0.44	1.38	1.19	0.84	1.88	4	0.62	1/2	2.38	2
mm.		88.9	11.2	35.1	30.2	21.3	47.8		15.7	12.7	60.5	1
in.	3/4"	3.88	0.5	1.69	1.5	1.05	2.06	4	0.62	1/2	2.75	2
mm.		98.6	12.7	42.9	38.1	26.7	52.3		15.7	12.7	69.9	1
in.	1"	4.25	0.56	2	1.94	1.32	2.19	4	0.62	1/2	3.12	3
mm.		108	14.2	50.8	49.3	33.5	55.6		15.7	12.7	79.2	1
in.	1 1/4"	4.62	0.62	2.5	2.31	1.66	2.25	4	0.62	1/2	3.5	3
mm.		117.3	15.7	63.5	58.7	42.2	57.2		15.7	12.7	88.9	1
in.	1 1/2"	5	0.69	2.88	2.56	1.9	2.44	4	0.62	1/2	3.88	4
mm.		127	17.5	73.2	65	48.3	62		15.7	12.7	98.6	2
in.	2"	6	0.75	3.62	3.06	2.38	2.5	4	0.75	5/8	4.75	6
mm.		152.4	19.1	91.9	77.7	60.5	63.5		19.1	15.9	120.7	3
in.	2 1/2"	7	0.88	4.12	3.56	2.88	2.75	4	0.75	5/8	5.5	8
mm.		177.8	22.4	104.6	90.4	73.2	69.9		19.1	15.9	139.7	4
in.	3"	7.5	0.94	5	4.25	3.5	2.75	4	0.75	5/8	6	10
mm.		190.5	23.9	127	108	88.9	69.9		19.1	15.9	152.4	5
in.	3 1/2"	8.5	0.94	5.5	4.81	4	2.81	8	0.75	5/8	7	12
mm.		215.9	23.9	139.7	122.2	101.6	71.4		19.1	15.9	177.8	5
in.	4"	9	0.94	6.19	5.31	4.5	3	8	0.75	5/8	7.5	15
mm.		228.6	23.9	157.2	134.9	114.3	76.2		19.1	15.9	190.5	7
in.	5"	10	0.94	7.31	6.44	5.56	3.5	8	0.88	3/4	8.5	19
mm.		254	23.9	185.7	163.6	141.2	88.9		22.4	19.1	215.9	9
in.	6"	11	1	8.5	7.56	6.63	3.5	8	0.88	3/4	9.5	24
mm.		279.4	25.4	215.9	192	168.4	88.9		22.4	19.1	241.3	11
in.	8"	13.5	1.12	10.62	9.69	8.63	4	8	0.88	3/4	11.75	39
mm.		342.9	28.4	269.7	246.1	219.2	101.6		22.4	19.1	298.5	18
in.	10"	16	1.19	12.75	12	10.75	4	12	1	7/8	14.25	52
mm.		406.4	30.2	323.9	304.8	273.1	101.6		25.4	22.2	362	24
in.	12"	19	1.25	15	14.38	12.75	4.5	12	1	7/8	17	80
mm.		482.6	31.8	381	365.3	323.9	114.3		25.4	22.2	431.8	36
in.	14"	21	1.38	16.25	15.75	14	5	12	1.12	1	18.75	110
mm.		533.4	35.1	412.8	400.1	355.6	127		28.4	25.4	476.3	50
in.	16"	23.5	1.44	18.5	18	16	5	16	1.12	1	21.25	140
mm.		596.9	36.6	469.9	457.2	406.4	127		28.4	25.4	539.8	64
in.	18"	25	1.56	21	19.88	18	5.5	16	1.25	1 1/8	22.75	150
mm.		635	39.6	533.4	505	457.2	139.7		31.8	28.6	577.9	68
in.	20"	27.5	1.69	23	22	20	5.69	20	1.25	1 1/8	25	180
mm.		698.5	42.9	584.2	558.8	508	144.5		31.8	28.6	635	82
in.	24"	32	1.88	27.25	26.12	24	6	20	1.38	1 1/4	29.5	260
mm.		812.8	47.8	692.2	663.4	609.6	152.4		35.1	31.8	749.3	118

forged steel flange dimensions class300

Nominal size		Outside diam. of flange	Thick. of flange	Diam. of raised face	Diam of hub at base	Diam. of hub at point of welding	Length thru hub	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R	X	A	Y
in.	1/2"	3.75	0.56	1.38	1.5	0.84	2.06	4	0.62	1/2	2.62	2
mm.		95.3	14.2	35.1	38.1	21.3	52.3		15.7	12.7	66.5	1
in.	3/4"	4.62	0.62	1.69	1.88	1.05	2.25	4	0.75	5/8	3.25	3
mm.		117.3	15.7	42.9	47.8	26.7	57.2		19.1	15.9	82.6	1
in.	1"	4.88	0.69	2	2.12	1.32	2.44	4	0.75	5/8	3.5	4
mm.		124	17.5	50.8	53.8	33.5	62		19.1	15.9	88.9	2
in.	1 1/4"	5.25	0.75	2.5	2.5	1.66	2.56	4	0.75	5/8	3.88	5
mm.		133.4	19.1	63.5	63.5	42.2	65		19.1	15.9	98.6	2
in.	1 1/2"	6.12	0.81	2.88	2.75	1.9	2.69	4	0.88	3/4	4.5	7
mm.		155.4	20.6	73.2	69.9	48.3	68.3		22.4	19.1	114.3	3
in.	2"	6.5	0.88	3.62	3.31	2.38	2.75	8	0.75	5/8	5	9
mm.		165.1	22.4	91.9	84.1	60.5	69.9		19.1	15.9	127	4
in.	2 1/2"	7.5	1	4.12	3.94	2.88	3	8	0.88	3/4	5.88	12
mm.		190.5	25.4	104.6	100.1	73.2	76.2		22.4	19.1	149.4	5
in.	3"	8.25	1.12	5	4.62	3.5	3.12	8	0.88	3/4	6.62	15
mm.		209.6	28.4	127	117.3	88.9	79.2		22.4	19.1	168.1	7
in.	3 1/2"	9	1.19	5.5	5.25	4	3.19	8	0.88	3/4	7.25	18
mm.		228.6	30.2	139.7	133.4	101.6	81		22.4	19.1	184.2	8
in.	4"	10	1.25	6.19	5.75	4.5	3.38	8	0.88	3/4	7.88	25
mm.		254	31.8	157.2	146.1	114.3	85.9		22.4	19.1	200.2	11
in.	5"	11	1.38	7.31	7	5.56	3.88	8	0.88	3/4	9.25	32
mm.		279.4	35.1	185.7	177.8	141.2	98.6		22.4	19.1	235	15
in.	6"	12.5	1.44	8.5	8.12	6.63	3.88	12	0.88	3/4	10.62	42
mm.		317.5	36.6	215.9	206.2	168.4	98.6		22.4	19.1	269.7	19
in.	8"	15	1.62	10.62	10.25	8.63	4.38	12	1	7/8	13	67
mm.		381	41.1	269.7	260.4	219.2	111.3		25.4	22.2	330.2	30
in.	10"	17.5	1.88	12.75	12.62	10.75	4.62	16	1.12	1	15.25	91
mm.		444.5	47.8	323.9	320.5	273.1	117.3		28.4	25.4	387.4	41
in.	12"	20.5	2	15	14.75	12.75	5.12	16	1.25	1 1/8	17.75	140
mm.		520.7	50.8	381	374.7	323.9	130		31.8	28.6	450.9	64
in.	14"	23	2.12	16.25	16.75	14	5.62	20	1.25	1 1/8	20.25	180
mm.		584.2	53.8	412.8	425.5	355.6	142.7		31.8	28.6	514.4	82
in.	16"	25.5	2.25	18.5	19	16	5.75	20	1.38	1 1/4	22.5	250
mm.		647.7	57.2	469.9	482.6	406.4	146.1		35.1	31.8	571.5	113
in.	18"	28	2.38	21	21	18	6.25	24	1.38	1 1/4	24.75	320
mm.		711.2	60.5	533.4	533.4	457.2	158.8		35.1	31.8	628.7	145
in.	20"	30.5	2.5	23	23.12	20	6.38	24	1.38	1 1/4	27	400
mm.		774.7	63.5	584.2	587.2	508	162.1		35.1	31.8	685.8	181
in.	24"	36	2.75	27.25	27.62	24	6.62	24	1.62	1 1/2	32	580
mm.		914.4	69.9	692.2	701.5	609.6	168.1		41.1	38.1	812.8	263

forged steel flange dimensions class600

Nominal size		Outside diam. of flange	Thick. of flange	Diam. of raised face	Diam of hub at base	Diam. of hub at point of welding	Length thru hub	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R	X	A	Y
in.	1/2"	3.75	0.56	1.38	1.5	0.84	2.06	4	0.62	1/2	2.62	2
mm.		95.3	14.2	35.1	38.1	21.3	52.3		15.7	12.7	66.5	1
in.	3/4"	4.62	0.62	1.69	1.88	1.05	2.25	4	0.75	5/8	3.25	4
mm.		117.3	15.7	42.9	47.8	26.7	57.2		19.1	15.9	82.6	2
in.	1"	4.88	0.69	2	2.12	1.32	2.44	4	0.75	5/8	3.5	4
mm.		124	17.5	50.8	53.8	33.5	62		19.1	15.9	88.9	2
in.	1 1/4"	5.25	0.81	2.5	2.5	1.66	2.62	4	0.75	5/8	3.88	6
mm.		133.4	20.6	63.5	63.5	42.2	66.5		19.1	15.9	98.6	3
in.	1 1/2"	6.12	0.88	2.88	2.75	1.9	2.75	4	0.88	3/4	4.5	8
mm.		155.4	22.4	73.2	69.9	48.3	69.9		22.4	19.1	114.3	4
in.	2"	6.5	1	3.62	3.31	2.38	2.88	8	0.75	5/8	5	12
mm.		165.1	25.4	91.9	84.1	60.5	73.2		19.1	15.9	127	5
in.	2 1/2"	7.5	1.12	4.12	3.94	2.88	3.12	8	0.88	3/4	5.88	18
mm.		190.5	28.4	104.6	100.1	73.2	79.2		22.4	19.1	149.4	8
in.	3"	8.25	1.25	5	4.62	3.5	3.25	8	0.88	3/4	6.62	23
mm.		209.6	31.8	127	117.3	88.9	82.6		22.4	19.1	168.1	10
in.	3 1/2"	9	1.38	5.5	5.25	4	3.38	8	1	7/8	7.25	26
mm.		228.6	35.1	139.7	133.4	101.6	85.9		25.4	22.2	184.2	12
in.	4"	10.75	1.5	6.19	6	4.5	4	8	1	7/8	8.5	42
mm.		273.1	38.1	157.2	152.4	114.3	101.6		25.4	22.2	215.9	19
in.	5"	13	1.75	7.31	7.44	5.56	4.5	8	1.12	1	10.5	68
mm.		330.2	44.5	185.7	189	141.2	114.3		28.4	25.4	266.7	31
in.	6"	14	1.88	8.5	8.75	6.63	4.62	12	1.12	1	11.5	81
mm.		355.6	47.8	215.9	222.3	168.4	117.3		28.4	25.4	292.1	37
in.	8"	16.5	2.19	10.62	10.75	8.63	5.25	12	1.25	1 1/8	13.75	120
mm.		419.1	55.6	269.7	273.1	219.2	133.4		31.8	28.6	349.3	54
in.	10"	20	2.5	12.75	13.5	10.75	6	16	1.38	1 1/4	17	190
mm.		508	63.5	323.9	342.9	273.1	152.4		35.1	31.8	431.8	86
in.	12"	22	2.62	15	15.75	12.75	6.12	20	1.38	1 1/4	19.25	225
mm.		558.8	66.5	381	400.1	323.9	155.4		35.1	31.8	489	102
in.	14"	23.75	2.75	16.25	17	14	6.5	20	1.5	1 3/4	20.75	280
mm.		603.3	69.9	412.8	431.8	355.6	165.1		38.1	34.9	527.1	127
in.	16"	27	3	18.5	19.5	16	7	20	1.62	1 1/2	23.75	390
mm.		685.8	76.2	469.9	495.3	406.4	177.8		41.1	38.1	603.3	177
in.	18"	29.25	3.25	21	21.5	18	7.25	20	1.75	1 5/8	25.75	475
mm.		743	82.6	533.4	546.1	457.2	184.2		44.5	41.3	654.1	215
in.	20"	32	3.5	23	24	20	7.5	24	1.75	1 5/8	28.5	590
mm.		812.8	88.9	584.2	609.6	508	190.5		44.5	41.3	723.9	268
in.	24"	37	4	27.25	28.25	24	8	24	2	1 7/8	33	830
mm.		939.8	101.6	692.2	717.6	609.6	203.2		50.8	47.6	838.2	376

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