Superior Steel Overseas - | E-Showroom
Superior Steel Overseas - | E-Showroom
These are cold drawn WELDED tubes that get,during the cold drawing the cold drawing process, a good roundness and a high ID precision, that satisfies tolerances H9 or H10 according to EN 20286.
Applications:
These tubes are construction elements, ready for the assembly of hydraulic and pneumatic cylinders.
Norms:
Cold Drawn Welded Tubes EN 10305-2
Dimensional Features Of The ID EN 20286
Dimensional Tolerances
OD: see dimensional tables of the bore cylinder tubes inside H9 or H10.
ID:
For steelgrade E235,tolerance H10 with roughness(Ra) below 1 micron(µm).
For steelgrade E335,tolerance H9 with roughness(Ra) below 0.8 micron(µm).
(see dimensional table for welded smooth bore cylinder tubes inside H9 or H10).
W.T.: ± 7.5% with a minimum of ±0.1 mm
Max.W.T.- Min W.T.
ECCENTRICITY: _____________________ *100 ≤ 7.5%
Max.W.T.+ Min W.T.
STRAIGHTNESS:
for OD ≤ 260 mm
se ReH ≤ 500 Mpa 0.0015 L;
se ReH > 500 Mpa 0.002 L;
for OD >260 mm
se ReH ≤ 500 Mpa 0.0025 L;
se ReH > 500 Mpa 0.003 L;
L= total length of the tube, the max. values to be checked on the total tube length.