As per Material Standards : ASTM A234, A403, A420, A860, B366, IS 1239 & MSS SP - 75
As per Dimensional Standards : ASME/ANSI B16.9, ASME B16.28, DIN 2605 / 2606, MSS-SP-43,SP-75

Elbows (45°)
Short Radius (SR)
2 - 72
Elbows (90°)
Short Radius (SR)
2 - 72
Elbows (90°)
Long Radius (LR)
2 - 72
Elbows (45°)
Long Radius (LR)
2 - 72

Elbows (180°)
Long Radius (LR)
2 - 72
Straight Tee
2 - 72
Reducing Tee
2 - 72
Reducer - Concentric
8 - 100

Reducer - Eccentric
8" - 100
Cross - Equal
8" - 30
Cross - Reducing
8" - 30
Stub End
4" - 40


Other / Equivalent Dimensional Standards in ASME, MSS SP, API, DIN, BS, JIS & IS can also be followed as per applicability.