OD: 6-400mm

Thickness: 0.8-30mm

Standard: EN10305-1,EN10305-4,DIN2391,ASTM A519,GB/T3639.

Materials: E215,E355,ST35,ST45,ST52,4130,4140,10,20,35,45

Delivery Condition: Cold drawn,cold drawn and stress released,normalizing,annealed.

ID Tolerance：H8-H9

Straightness：0.2-0.5mm/m

Inner Roughness：Ra0.2-0.8um

Processing Method: Cold rolling, Cold drawn-honed, Deep hole boring-honed, Deep hole boring-roll.

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