"round steel tubes"

Ống xi lanh thủy lực chính xác theo tiêu chuẩn ASTM A106 Honing E355 ST52 1/2 inch được kéo nguội

ASTM A106 E355 ST52 1/2 Inch ThicCold Drawn Seamless Bright Honing Precision Hydraulic Cylinder Pipe For Boiler In the standard is DIN 2391-1 . The raw material of the hydraulic steel pipe is finely drawn, oxidation-free bright heat treatment (NBK state), non-destructive testing, the inner hole of the steel pipe is high-pressure flushed, pickled, the inner and outer walls of the steel pipe are treated with anti-rust oil to prevent rust, and the two ends are capped as dust