Stainless steel, acid-resistant steel and heat-resistant steel

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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)

 

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