advantages: Precision inside diameter. Nice mechanical property, are able to withstand high pressure impacting. Nice straightness, minimum surface roughness and small wall thickness deviation. No deformation after cold bending, no crack after flaring and flattening.

Standard: DIN2391, EN10305-1.

Material: ST35, ST45, ST52, E235, E255, E355.

Outer diameter: 6 to 168 mm.

Wall thickness: 0.6 to 25mm.

Delivery condition: BK(+C), BKW(+LC), BKS(+SR), GBK(+A), Q&T, NBK(+N).

Application: used in Automotive parts, Cylinder Liner sleeve, Hydraulic and Pneumatic cylinder, Hydraulic jack, Liquid Transport, Drill pipe, Mechanical Machine, Ship building, etc.