... : ST52,ST52.3,CK45,E355,16Mn,STKM13C,SAE1020 Ready to Honed Tube/Pre-honed Tube/Precison Cold Drawn TubeGrade: ST 52,ST52.3 ... ,CK45,E355,16Mn,STKM13C,SAE1020,SAE1026,SAE1045Metric size: 40 to 1000mmInch ... size: 1.5" to 20"Length: max 15 MeterStraightness: < 0.5 mm ...