Lap joint flanges ASME B16.5 CLASS 900 ASME B16.5

Nominal
Size
NPS
Outside
Diameter
of
Flange
Thickness
of
Flange
Diameter
Of Hub
At Base (1)
Length
thru
Hub
Diameter
Of
Bore
Fillet
Radius
Number of
Bolt Holes
Diameter
of
Bolt
Holes
Diameter
of
Bolts
Diameter
of
Bolt
Circle
Approx.
Weight

Pounds
Kg

O C X Y B r
½
¾
1 Sizes ½ thru 2 ½ are identical to Class 1500
1 ¼
1 ½
2
2 ½
3 in. 9.5 1.5 5 2.12 3.6 0.38 8 1  7/8 7.5 25
mm 241.3 38.1 127 53.8 91.4 9.7 25.4 22.2 190.5 11
4 in. 11.5 1.75 6.25 2.75 4.6 0.44 8 1.25 1 1/8 9.25 51
mm 292.1 44.5 158.8 69.9 116.8 11.2 31.8 28.6 235 23
5 in. 13.75 2 7.5 3.12 5.69 0.44 8 1.38 1 ¼ 11 81
mm 349.3 50.8 190.5 79.2 144.5 11.2 35.1 31.8 279.4 37
6 in. 15 2.19 9.25 3.38 6.75 0.5 12 1.25 1 1/8 12.5 105
mm 381 55.6 235 85.9 171.5 12.7 31.8 28.6 317.5 48
8 in. 18.5 2.5 11.75 4.5 8.75 0.5 12 1.5 1 3/8 15.5 190
mm 469.9 63.5 298.5 114.3 222.3 12.7 38.1 34.9 393.7 86
10 in. 21.5 2.75 14.5 5 10.92 0.5 16 1.5 1 3/8 18.5 275
mm 546.1 69.9 368.3 127 277.4 12.7 38.1 34.9 469.9 125
12 in. 24 3.12 16.5 5.62 12.92 0.5 20 1.5 1 3/8 21 370
mm 609.6 79.2 419.1 142.7 328.2 12.7 38.1 34.9 533.4 168
14 in. 25.25 3.38 17.75 6.12 14.18 0.5 20 1.62 1 ½ 22 415
mm 641.4 85.9 450.9 155.4 360.2 12.7 41.1 38.1 558.8 188
16 in. 27.75 3.5 20 6.5 16.19 0.5 20 1.75 1 5/8 24.25 465
mm 704.9 88.9 508 165.1 411.2 12.7 44.5 41.3 616 211
18 in. 31 4 22.25 7.5 18.2 0.5 20 2 1 7/8 27 650
mm 787.4 101.6 565.2 190.5 462.3 12.7 50.8 47.6 685.8 295
20 in. 33.75 4.25 24.5 8.25 20.25 0.5 20 2.12 2 29.5 810
mm 857.3 108 622.3 209.6 514.4 12.7 53.8 50.8 749.3 367
24 in. 41 5.5 29.5 10.5 24.25 0.5 20 2.62 2 ½ 35.5 1550
mm 1041.4 139.7 749.3 266.7 616 12.7 66.5 63.5 901.7 703