Charts & Specs

Approx. weight for Blind Flanges

Blind Flanges
Pipe
Size
Classification
150# 300# 400# 600# 900# 1500# 2500#
1/2 1 2 2 2 4 4 7
3/4 2 3 3 3 6 6 8
1 2 3 4 4 8 8 11
11/4 3 4 5 5 9 9 16
11/5 4 6 8 8 13 13 23
2 5 8 10 10 25 25 37
21/2 7 12 15 15 35 35 56
3 9 16 20 20 31 48 86
31/5 13 21 29 29 --- --- ---
4 17 27 33 41 54 73 135
5 20 35 44 68 87 140 225
6 26 50 61 86 115 160 345
8 45 81 100 140 200 300 530
10 70 125 155 230 290 510 1025
12 110 125 226 295 415 690 1300
14 140 250 226 355 520 975 ---
16 180 295 398 495 600 1300 ---
18 220 395 502 630 850 1750 ---
20 285 505 621 810 1075 2225 ---
24 430 790 936 1250 2050 3625 ---