NPSO.D. D Elbow Center-to-End B3D Elbow Center-to-End B
1/221.316
3/426.71924
133.42231
42.22539
48.32947
260.33563
734479
388.95195
4114.364127
101.657111
5141.379157
6168.395189
8219.1127252
10273159316
12323.8190378
14355.6222441
16406.4254505
18457286568
20508318632
22559343694
24610381757
26660406821
28711438883
30762470964
328135021010
348645331073
369145651135
389656001200
4010166321264
4210676601326
4411186951389
4611687271453
4812197591516

Tolerances
Nominal Pipe SizeOutside Diameter at Bevel (D)Inside Diameter at EndCenter to End LR (A/B)Center to End 3D (A/B)Wall Thickness (t)
1/2 to 2.1/2+ 1.6 – 0.80.823Not less than 87.5% of Nominal Wall Thickness
3 to 3.1/21.61.623
41.61.623
5 to 8+ 2.4 – 1.61.623
10 to 18+ 4 – 3.23.223
20 to 24+ 6.4 – 4.84.823
26 to 30+ 6.4 – 4.8+ 6.4 – 4.836
32 to 48+ 6.4 – 4.8+ 6.4 – 4.856