... : 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 ... ,etcStandardsDIN2391,DIN2445,DIN1629,DIN1630,DIN73000,DIN2445,EN10305,JIS G3445,ASTM A106,ASTM A179,ASTM A519,etc.Delievery ConditionNBK(+N), GBK(+A), BK(+C) ,BKW ...