Dimensional tolerances for pipes - Stainless Store: Stainless Steel Supplier

Dimensional tolerances for pipes

Dimensional tolerances acc. To EN ISO 1127

Outside Diameter		Wall Thickness
tolerance class	allowed deviation	tolerance class	allowed deviation
D1	+/- 1,5% min +/- 0,75 mm	T1	+/- 15% min +/- 0,60 mm
D2	+/- 1% min +/- 0,50 mm	T2	+/- 12,5 % min +/- 0,40 mm
D3	+/- 0,75% min +/- 0,30 mm	T3	+/- 10% min +/- 0,20 mm
D4	+/- 0,50% min +/- 0,10 mm	T4	+/- 7,5% min +/- 0,15 mm

Dimensional tolerances acc. To EN 10305 ( precise)

Outside Diameter	Tolerance
4≤D≤30	±0,08 mm
30<D≤40	±0,15 mm
40<D≤50	±0,20 mm
50<D≤60	±0,25 mm
60<D≤70	±0,30 mm
70<D≤80	±0,35 mm
Wall thickness tolerance	±10,0% (minimum ± 0,1 mm)

Please note that the specified tolerances apply to full bars and that the control measurement is made at the ends of the pipe. When purchasing unprefabricated sections other than those listed in the production certificate for a particular batch, deviations from the values given in certificate 3.1 may be expected and may not be a basis for considering the product as not meeting the requirements of the standard or as being of inferior quality.

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