Metric Size

ID25mm to 300mm

Standard Lengths

3000mm to 10000mm Long

Inside Diameter

Skived & Roller Burnished or Honed Tolerance ISO H8, H9 Surface finish maximum Ra 0.2 to 0.4 micron

Straightness

Max. 1mm per m

Marking

Tube are marked on its OD, over its entire length, indicating the steel grade, delivery condition, heat number, size (ID X OD) and our PO no., other marking on the tube

Eccentricity

<=OD185mm – maximum 5% of mean wall thickness> = OD185mm maximum 7.5% of mean wall thickness.

Corrosion Protection

ID protected by good quality antirust oil. It must withstand corrosion during shipment as well as storage upto 12 months.

Packing

Strapped and Bundled

Length

In random lengths between 3000mm to 10000mm

Tubes ends

Must be parted off accurately as possible, perpendicular to the tube axis and plastic capped.

C%

Si%

Mn%

S%

P%

Max 0.22

Max 0.55

1.60

0.025 max

0.025 max

Tensile Strength

Yield Strength

Elongation

Weld ability accordingly to the common welding system

600 N/mm2

520 N/mm2

14%

Carbon equivalent 0.45