Pipe Components 2011 - Van Leeuwen Buizen

Nominal
diameter inch
Pipe components - Flanges as per ASME B16 - welding neck flanges
Forged welding neck flanges 300 lbs Sched 40 / 80 / 160
D
mm
d1
mm
I.D.
mm
b
mm
g
mm
Welding neck flanges 300 lbs Sched 40
k
mm
h
mm
Number of
holes
12” 520.7 323.9 303.2 50.8 381 450.8 130 16 31.7
14” 584.2 355.6 333.3 53.8 412.7 514.3 142.7 20 31.7
18” 711.2 457.2 428.7 60.5 533.4 628.6 158.8 24 34.9
Welding neck flanges 300 lbs Sched 80
10” 444.5 273 242.9 47.8 323.8 387.3 117.3 16 28.6
12” 520.7 323.9 288.9 50.8 381 450.8 130 16 31.7
14” 584.2 355.6 317.5 53.8 412.7 514.3 142.7 20 31.7
16” 647.7 406.4 363.5 57.2 469.9 571.5 146.1 20 35
18” 711.2 457.2 409.5 60.5 533.4 628.6 158.8 24 35
20” 774.7 508 455.6 63.5 584.2 685.8 162.1 24 35
24” 914.4 609.6 547.7 69.9 692.1 812.8 168.1 24 41.1
Welding neck flanges 300 lbs Sched 160
1/2” 95.2 21.3 11.8 14.2 34.9 66.7 52.3 4 15.9
3/4” 117.5 26.7 15.6 15.7 42.9 82.5 57.2 4 19
1” 123.8 33.4 20.7 17.5 50.8 88.9 62 4 19
1.1/2” 155.6 48.3 34 20.6 73 114.3 68.3 4 22.2
2” 165.1 60.4 42.8 22.4 92.1 127 69.9 8 19
3” 209.5 88.9 66.6 28.4 127 168.3 79.2 8 22.2
4” 254 114.3 87.3 31.8 157.2 200 85.9 8 22.2
6” 317.5 168.3 131.8 36.6 215.9 269.7 98.6 12 22.3
8” 381 219.1 173.1 41.1 269.7 330.2 111.3 12 25.4
10” 444.5 273 215.9 47.8 323.8 387.3 117.3 16 28.6
No part of this publication may be multiplied or copied without previous written permission of Van Leeuwen Pipe and Tube 109
L
mm