ASME/ANSI B16.5 300 Class Socket Welding Flange/Standards, Dimensions & Weight

The SW forged flange shares similarities with slip-on and socket welding flanges, but has a counter-bored bore that can accommodate pipes. The remaining diameter of the bore matches the inside diameter of the pipe. A fillet weld is used to attach the Socket Welding Flange to the pipe’s hub, while an additional internal weld may be necessary for high-stress applications. Socket Flanges are widely used in high-pressure systems like hydraulic and steam lines.

  • Our company is a manufacturer of ASME/ANSI B16.5 300LB Socket Welding Flange, which is precisely engineered in accordance with international quality standards. For detailed dimensions of 300 Class Socket welding flange, kindly check the table below. Also, you can download the datasheet.
300 Class Socket Welding Flange Drawing ASME/ANSI B16.5
Product Socket Welding Flange
Pressure Rating 300 lb, 300 Class
Dimensional Specification ASME/ANSI B16.5
Size 1/2″ to 24″
Surface Treatment Anti-rust Oil, Paint, Zinc, Hot Dipped Galvanized
Grades 304, 304L, 316L, 321, 347, 904L, Duplex, Carbon Steel, Nickel Alloys
Test Certificates As per EN 10204 3.1
Inspection Videos, Pictures, Inspection Report with Goods
Pipe Normal Diam. O.D. Flange Thk. Of Flange Min Diam.
of
Hub
Diameter of Raised Face Length Hub.Y Bore Depth
of
Socket.D
Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
Approx. Weight
inch dn O C X G Y B D BC BH BN BD KG/PCS LB/PCS
1/2″ 15 95.5 14.2 38.1 35.1 22.4 22.4 9. 7 66.5 15.7 4 1/2″ 0.7 1.5
3/4″ 20 117. 5 15.7 47.8 42.9 25.4 27.7 11.2 82.6 19.1 4 5/8″ 1.2 2.6
1″ 25 124. 0 17.5 53.8 50.8 26.9 34.5 12.7 88.9 19.1 4 5/8″ 1.4 3.1
1-1/4″ 32 133. 5 19.1 63.5 63.5 26.9 43.2 14.2 98.6 19.1 4 5/8″ 1.9 4.2
1-1/2″ 40 155. 5 20.6 69.9 73.2 30.2 49.5 15.7 114.3 22.4 4 5/8″ 2.8 6.2
2″ 50 165. 0 22.4 84.1 91.9 33.3 62 17.5 127 19.1 8 5/8″ 3.3 7.3
2-1/2″ 65 190. 5 25.4 100.1 104.6 38.1 74.7 19.1 149.4 22.4 8 3/4″ 4.6 10.1
3″ 80 209. 5 28.4 117.3 127 42.9 90.7 20.6 168.1 22.4 8 3/4″ 6.3 13.9
3-1/2″ 90 228. 5 30.2 133.4 139.7 44.5 103. 4 22.4 184.2 22.4 8 3/4″ 7.8 17.2
4″ 100 254. 0 31.8 146.1 157.2 47.8 116. 1 200.2 22.4 8 3/4″ 10 22
5″ 125 279. 5 35.1 177.8 185.7 50.8 143. 8 235 22.4 8 3/4″
6″ 150 317. 5 36.6 206.2 215.9 52.3 170. 7 269.7 22.4 12 3/4″
8″ 200 381. 0 41.1 260.4 269.7 62 221. 5 330.2 25.4 12 7/8″
10″ 250 444. 5 47.8 320.5 323.9 66.5 276. 4 387.4 28.4 16 1″
12″ 300 520. 5 50.8 374.7 381 73.2 327. 2 450.9 31.8 16 1 1/8″
14″ 350 584. 0 53.8 425.5 412.8 76.2 359. 2 514..4 31.8 20 1 1/8″
16″ 400 647. 5 57.2 482.6 469.9 82.6 410. 5 571.5 35.1 20 1 1/4″
18″ 450 711. 0 60.5 533.4 533.4 88.9 461. 8 628.7 35.1 24 1 1/4″
20″ 500 774. 5 63.5 587.2 584.2 95.3 513. 1 685.8 35.1 24 1 1/4″
24″ 600 914. 5 69.9 701.5 692.2 106. 4 616. 0 812.8 41.1 24 1 1/2″