ASME B16.48 Class 300

NPS Inside Diameter, B Diame外ter, O Centerline Dimension, A Thick-ness, t Web Width, W Approximate Weight kgs
1/2 16 51 65 6.4 38 2 0.36
3/4 21 64 80 6.4 38 2 0.56
1 27 70 90 6.4 38 2 0.68
1 1/4 42 79 100 6.4 38 2 0.79
1 1/2 48 92 115 6.4 38 2 1.06
2 61 108 125 9.7 51 2 1.75
2 1/2 73 127 150 9.7 51 2 2.44
3 89 146 170 9.7 64 2 3.16
3 1/2 102 162 185 12.7 64 2 4.55
4 114 178 200 12.7 64 2 5.38
5 141 213 235 15.7 76 2 8.84
6 168 248 270 15.7 76 2 11.75
8 219 305 330 22.4 76 2 22.79
10 273 359 385 25.4 102 2 33.66
12 324 419 450 28.4 102 2 49.81
14 356 483 515 31.8 108 2 75.75
16 406 536 570 38.1 108 2 107.21
18 457 594 630 41.1 114 2 139.16
20 508 651 685 44.5 121 2 177.28
24 610 772 810 50.8 140 2 278.46
Standards, Dimensions & Weight
Special bland flange
Figure 8 blanks
Spectacle Blind Flange
Spectacle Blind Flange
Screwed Flanges
Weldoflange, Nipoflange
Anchor flange
Orifice Weld Neck Flanges
Orifice Flanges
Long Weld Neck Flange
Reducing Flange
Expander Flange
Expander Flange
Anchor flange
Weldoflange / Nipoflange
Large Diameter Flanges
Large Diameter Flanges
NW Long Weld Neck Flanges
NW Long Weld Neck Flanges

Flanges specification, Standard and identification

Below you will find a short description and definition of each type, completed with an detailed image.