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 XS
D
mm
d1
mm
I.D.
mm
b
mm
g
mm
k
mm
h
mm
Number of
holes
1/2” 95.2 21.3 13.9 14.2 35.1 66.7 52.3 4 15.9
3/4” 117.5 26.7 18.9 15.7 42.9 82.5 57.2 4 19
1” 123.8 33.4 24.3 17.5 50.8 88.9 61.9 4 19
1.1/4” 133.3 42.4 32.5 19.1 63.5 98.5 65 4 19
1.1/2” 155.6 48.3 38.1 20.6 73.2 114.3 68.3 4 22.2
2” 165.1 60.3 49.2 22.4 91.9 127 69.9 8 19
2.1/2” 190.5 73.1 59 25.4 104.6 149.2 76.2 8 22.2
3” 209.5 88.9 73.7 28.4 127 168.3 79.2 8 22.2
4” 254 114.3 97.2 31.8 157.2 200 85.9 8 22.2
5” 279.4 141.3 122.2 35.1 185.7 234.9 98.6 8 22.2
6” 317.5 168.3 146.3 36.6 215.9 269.9 98.6 12 22.2
8” 381 219.1 193.7 41.1 269.7 330.2 111.3 12 25.4
10” 444.5 273 247.7 47.8 323.9 387.3 117.3 16 28.4
12” 520.7 323.9 298.5 50.8 381 450.8 130 16 31.7
14” 584.2 355.6 330.2 53.8 412.8 514.3 142.7 20 31.7
16” 647.7 406.4 381 57.2 469.9 571.5 146.1 20 34.9
18” 711.2 457.2 431.8 60.5 533.4 628.6 158.8 24 34.9
20” 774.7 508 482.6 63.5 584.2 685.8 162.1 24 34.9
24” 914.4 609.6 584.2 69.9 692.1 812.8 168.1 24 41.3
30” ASME B16.47A 1092.2 762 736.6 92.1 857.2 996.9 209.6 28 47.5
30” BS 3293 1092.2 762 736.6 92.1 857.2 996.9 209.6 28 47.5
No part of this publication may be multiplied or copied without previous written permission of Van Leeuwen Pipe and Tube 107
L
mm