Automotive pipeline system;hydraulic system of diesel engine and engineering machinery;hydraulic system of locomotive, aerospace Oil Tube Features: 1) Executive standard: GB30932) Specification range: OD: 6-10mm, ID: 1.0-4.0mm.3) steel grade: 20A, 20, st35, st45 10#,20#,45#,16Mn, ST35,ST37,ST37.4,ST45,ST52,ST52.4,4) ASTM,DIN,EN,JIS Descriptionseamless steel pipes,seamless steel pipes,cold-drawn ...