Flange With Welding Seat

Flange With Welding Seat

Flanges with seat to weld are those in which the tube is inserted until it makes contact with the seat that has the same internal diameter as the tube, thus leaving a smooth conduit without cavities.

Fixing the flange to the tube is done by applying a weld bead around the hub. The general application of these flanges is in pipe lines intended for chemical processes, due to their particular characteristic of granting the conduit a constant section.

Weld Seat Flange ANSI 150 Lb. (Socket Weld "SW")

Nominal pipe size	Flange Flange						Hub neck	Raised face Highlight	Drilling template Drills			Approx. weight Weight approx.
	D	C	J	x	b	h	m	g	Number	l	k	Kg
Diameter nominal tube	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	Number	mm. inches	mm. inches	Pounds
1/4 ″	88.9 3 1/2	9.1 0.36	14.7 0.58	9.5 3/8	11.1 7/16	15.9 5/8	30.2 1 3/16	34.9 1 3/8	4	15.9 5/8	60.3 2 3/8	0.3 0.7
3/8 ″	88.9 3 1/2	12.4 0.49	18.3 0.72	9.5 3/8	11.1 7/16	15.9 5/8	30.2 1 3/16	34.9 1 3/8	4	15.9 5/8	60.3 2 3/8	0.4 0.8
1/2 ″	88.9 3 1/2	15.7 0.62	22.35 0.88	9.5 3/8	11.1 7/16	15.9 5/8	30.2 1 3/16	34.9 1 3/8	4	15.9 5/8	60.3 2 3/8	0.4 0.9
3/4 ″	98.4 3 7/8	20.8 0.82	27.7 1.09	11.1 7/16	12.7 1/2	15.9 5/8	38.1 1 1/2	42.9 1 11/16	4	15.9 5/8	69.8 2 3/4	0.7 1.5
1"	107.9 4 1/4	26.7 1.05	34.5 1.36	12.7 1/2	14.3 9/16	17.5 11/16	49.2 1 15/16	50.8 2	4	15.9 5/8	79.4 3 1/8	0.9 2
1 1/4 ″	117.5 4 5/8	35.05 1.38	43.2 1.70	14.3 9/16	15.9 5/8	20.6 13/16	58.7 2 5/16	63.5 2 1/2	4	15.9 5/8	88.9 3 1/2	1.2 2.6
1 1/2 ″	127.0 5	40.9 1.61	49.5 1.95	15.9 5/8	17.5 11/16	22.2 7/8	65.1 2 9/16	73.0 2 7/8	4	15.9 5/8	98.4 3 7/8	1.5 3.3
two"	152.4 6	52.6 2.07	62.0 2.44	17.5 11/16	19.1 3/4	25.4 1	77.8 3 1/16	92.1 3 5/8	4	19.0 3/4	120.6 4 3/4	2.3 5.1
2 1/2 ″	177.8 7	62.7 2.47	74.7 2.94	19.05 3/4	22.3 7/8	28.6 1 1/8	90.5 3 9/16	104.8 4 1/8	4	19.0 3/4	139.7 5 1/2	3.7 8.1
3"	190.5 7 1/2	78.0 3.07	90.7 3.57	20.6 13/16	23.8 15/16	30.2 1 3/16	107.9 4 1/4	127.0 5	4	19.0 3/4	152.4 6	4.2 9.2
3 1/2 ″	215.9 8 1/2	90.2 3.55	103.4 4.07	22.2 7/8	23.8 15/16	31.7 1 1/4	122.2 4 13/16	139.7 5 1/2	8	19.0 3/4	177.8 7	5.3 11.7
4"	228.6 9	102.4 4.03	116.1 4.57	23.8 15/16	23.8 15/16	33.3 1 5/16	134.9 5 5/16	157.2 6 3/16	8	19.0 3/4	190.5 7 1/2	5.9 13
5"	254 10	128.3 5.05	143.8 5.66	23.8 15/16	23.8 15/16	36.5 1 7/16	163.5 6 7/16	185.7 7 5/16	8	22.2 7/8	215.9 8 1/2	7 15.4
6 ″	279.4 11	154.2 6.07	170.7 6.72	27.0 1 1/16	25.4 1	39.7 1 9/16	192.1 7 9/16	215.9 8 1/2	8	22.2 7/8	241.3 9 1/2	8.4 18.5
8 ″	342.9 13 1/2	202.7 7.98	221.5 8.72	31.7 1 1/4	28.6 1 1/8	44.4 1 3/4	246.1 9 11/16	269.9 10 5/8	8	22.2 7/8	298.4 11 3/4	13 28.6
10 ″	406.4 16	254.5 10.02	276.35 10.88	33.3 1 5/16	30.2 1 3/16	49.2 1 15/16	304.8 12	323.8 12 3/4	12	25.4 1	361.9 14 1/4	19.5 43
12 ″	482.6 19	304.8 12.00	327.15 12.88	39.7 1 9/16	31.8 1 1/4	55.6 2 3/16	365.1 14 3/8	381.0 15	12	25.4 1	431.8 17	29.5 64.9
14 ″	533.4 21	336.55 13.25	359.15 14.14	41.3 1 5/8	34.9 1 3/8	57.1 2 1/4	400.0 15 3/4	412.7 16 1/4	12	28.6 1 1/8	476.2 18 3/4	41 90
16 ″	596.9 23 1/2	387.35 15.25	410.5 16.16	44.4 1 3/4	36.5 1 7/16	63.5 2 1/2	457.2 18	469.9 18 1/2	16	28.6 1 1/8	539.7 21 1/4	44.5 98
18 ″	635.0 25	438.15 17.25	461.8 18.18	49.2 1 15/16	39.7 1 9/16	68.3 2 11/16	504.8 19 7/8	533.4 21	16	31.7 1 1/4	577.8 22 3/4	59 130
twenty"	698.5 27 1/2	488.95 19.25	513.1 20.20	54.0 2 1/8	42.9 1 11/16	73.0 2 7/8	558.8 22	584.2 23	20	31.7 1 1/4	635.0 25	75 165
24 ″	812.8 32	590.55 23.25	615.95 24.25	63.5 2 1/2	47.6 1 7/8	82.5 3 1/4	663.6 26 1/8	692.1 27 1/4	20	34.9 1 3/8	749.3 29 1/2	100 220

ANSI 300 Lb. Weld Seat Flange (Socket Weld" SW")

Nominal pipe size	Flange Flange						Hub neck	Raised face Highlight	Drilling template Drills			Approx. weight Weight approx.
	D	C	J	x	b	h	m	g	Number	l	k	Kg
Diameter nominal tube	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	mm. inches	Number	mm. inches	mm. inches	Pounds
1/4 ″	95.2 3 3/4	91.1 0.36	14.7 0.58	9.5 3/8	14.3 9/16	22.2 7/8	38.1 1 1/2	32.9 1 3/8	4	15.9 5/8	66.7 2 5/8	0.5 1.1
3/8 ″	95.2 3 3/4	12.4 0.49	18.3 0.72	9.5 3/8	14.3 9/16	22.2 7/8	38.1 1 1/2	32.9 1 3/8	4	15.9 5/8	66.7 2 5/8	0.6 1.3
1/2 ″	95.2 3 3/4	15.7 0.62	22.35 0.88	9.5 3/8	14.3 9/16	22.2 7/8	38.1 1 1/2	32.9 1 3/8	4	15.9 5/8	66.7 2 5/8	0.7 1.5
3/4 ″	117.5 4 5/8	20.8 0.82	27.7 1.09	11.1 7/16	15.9 5/8	25.4 1	47.6 1 7/8	42.9 1 11/16	4	19.05 3/4	82.5 3 1/4	1.2 2.6
1"	123.8 4 7/8	26.7 1.05	34.5 1.36	12.7 1/2	17.5 11/16	27.0 1 1/16	54.0 2 1/8	50.8 2	4	19.05 3/4	88.9 3 1/2	1.4 3.1
1 1/4 ″	133.35 5 1/4	35.05 1.38	43.2 1.70	14.3 9/16	19.05 3/4	27.0 1 1/16	63.5 2 1/2	63.5 2 1/2	4	19.05 3/4	98.4 3 7/8	1.9 4.2
1 1/2 ″	155.6 6 1/8	40.9 1.61	49.5 1.95	15.9 5/8	20.6 13/16	30.2 1 3/16	69.8 2 3/4	73.0 2 7/8	4	22.2 7/8	114.3 4 1/2	2.8 6.2
two"	165.1 6 1/2	52.6 2.07	62.0 2.44	17.5 11/16	22.2 7/8	33.3 1 5/16	84.1 3 5/16	92.1 3 5/8	8	19.05 3/4	127.0 5	3.3 7.3
2 1/2 ″	190.5 7 1/2	62.7 2.47	74.7 2.94	19.05 3/4	25.4 1	38.1 1 1/2	100.0 3 15/16	104.8 4 1/8	8	22.2 7/8	149.2 5 7/8	4.6 10.1
3"	209.55 8 1/4	78.0 3.07	90.7 3.57	20.6 13/16	28.6 1 1/8	42.9 1 11/16	117.5 4 5/8	1257 5	8	22.2 7/8	168.3 6 5/8	6.3 13.9
3 1/2 ″	228.6 9	90.2 3.55	103.4 4.07	22.2 7/8	30.2 1 3/16	44.4 1 3/4	133.35 5 1/4	139.7 5 1/2	8	22.2 7/8	184.15 7 1/4	7.8 17.2
4"	254 10	102.4 4.03	116.1 4.57	23.8 15/16	31.8 1 1/4	47.6 1 7/8	146.05 5 3/4	157.2 6 3/16	8	22.2 7/8	200.0 7 7/8	10.2 22.4

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