... ,CK45,E355,16Mn,STKM13C,SAE1020,SAE1026,SAE1045 Standard: DIN2391 Name: Hydraulic Cylinder Honed TubeGrade:ST52,ST52.3,CK45,E355,16Mn,STKM13C ... ,SAE1020,SAE1026,SAE1045Standard: DIN2391ID: 40-1000MMLEength: random length or fixed length as customers' requirementSurface: 0.2 - 0.4µTolerance:ID ... /0+0.089/0+0.140/0+0.230/0 Hydraulic Cylinder Honed Tube