Buttweld pipe fittings Tolerances

Tolerances – Butt Weld Fittings



General Notes

a All dimensions are in millimetres

b Tolerances are equal plus and minus except as noted

General Notes

1 Out-of-round is the sum of absolute values of plus and minus tolerances.

2 This tolerance may not apply in localized areas of formed fittings where increased wall thickness is required to meet design requirements of para 2.2. (ASME B16.9)

3 The inside diameter and the nominal wall thicknesses at ends are to be specified by the purchaser.

4 Unless otherwise specified by the purchaser, these tolerances apply to the nominal inside diameter, which equals the difference between the nominal outside diameter

and twice the nominal wall thickness