... hydraulic system of locomotive, aerospace Oil Tube Features: 1) Executive standard: GB30932) Specification range: OD: 6-10mm, ID: 1.0 ... ST35,ST37,ST37.4,ST45,ST52,ST52.4,4) ASTM,DIN,EN,JIS Descriptionseamless steel pipes,seamless steel pipes,cold ... ,etcStandardsDIN2391,DIN2445,DIN1629,DIN1630,DIN73000,DIN2445,EN10305,JIS G3445,ASTM A106,ASTM A179,ASTM A519,etc.Delievery ConditionNBK(+N), GBK(+A), BK(+C) ...