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