ASME/ANSI B16.5 Class 300 LJ

Nominal Pipe Size  Outside Diameter of Flange Thickness of Lap Joint Min. Diameter of Hub Length Through Hub Bore Corner Radius of Bore of Lapped Flange Diameter of Bolt Circle Diameter of Bolt Holes Number of Bolts Approxi-mate Weight kgs
NPS O tf X Y B r W I n  
1/2 95 14.3 38 22 22.9 3 66.7 15.9 4 0.70
3/4 115 15.9 48 25 28.2 3 82.6 19.1 4 1.16
1 125 17.5 54 27 34.9 3 88.9 19.1 4 1.50
1 1/4 135 19.1 64 27 43.7 5 98.4 19.1 4 1.86
1 1/2 155 20.7 70 30 50.0 6 114.3 22.2 4 2.63
2 165 22.3 84 33 62.5 8 127.0 19.1 8 3.02
2 1/2 190 25.4 100 38 75.4 8 149.2 22.2 8 4.48
3 210 28.6 117 43 91.4 10 168.3 22.2 8 6.08
3 1/2 230 30.2 133 44 104.1 10 184.2 22.2 8 7.68
4 255 31.8 146 48 116.8 11 200.0 22.2 8 10.07
5 280 35.0 178 51 144.4 11 235.0 22.2 8 12.64
6 320 36.6 206 52 171.4 13 269.9 22.2 12 16.39
8 380 41.3 260 62 222.2 13 330.2 25.4 12 24.57
10 445 47.7 321 95 277.4 13 387.4 28.6 16 39.40
12 520 50.8 375 102 328.2 13 450.8 31.8 16 56.33
14 585 54.0 425 111 360.2 13 514.4 31.8 20 81.97
16 650 57.2 483 121 411.2 13 571.5 34.9 20 106.10
18 710 60.4 533 130 462.3 13 628.6 34.9 24 127.52
20 775 63.5 587 140 514.4 13 685.8 34.9 24 157.92
24 915 69.9 702 152 616.0 13 812.8 41.3 24 237.21


Standards, Dimensions & Weight of Lap joint flange

AWWA Ring FlangeLap joint flange is having two components, a stub end, and a loose backing flange.



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