D_INT
Ø internal:D – 2 x w.t
Tolerance on Diameter (D/ID)
EN 10253-4 | D2:+/-1% or 0,5 mm whichever is the greater
EN 10253-4 | D3*:+/-0,75% or 0,3 mm whichever is the greater
EN 10253-4 | D4*:+/-0,5% or 0,1 mm whichever is the greater
DIN 2617:+/-1%
DIN 2617 | *:+/- 0,6 %
Tolerance on wall thickness
T (s1):-12,5% /+15%
Height
K (h):127 +/-7