Our company is specialized in Cold drawn & Cold rolled High precision Seamless pipe.. Application:: Automobile & locomotive part; Chassis part;Backbone of Automobile; Rear axle tube; Hydraulic cylinder system, etc.1. Main standard: DIN2391/17175/ASTMA519 /A192/A179/A106/A513-5/ EN10305-12. Steel grade: Carbon steel(C1010, C1020, C1026, C1045, ST52 etc.),Alloy steel (4130, 4140, etc)3. Size range: ID: 8~320mm WT:1~28mm In inch: ID(0.315~12.6) WT: (0.04~1.1)4. Delivery Condition: BK, BKS, NBK(bright & Phosphated)