ST37 ST52 Hydraulic Cylinder Cold Drawn Honed Tube

1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder. 2. Commodity: E470 seamless honed steel tube for hydraulic cylinder 3. Size range: 40mm*30mm-580mm*500mm 4. Available steel grade:  SAE/AISI:  SAE1020, SAE1026, SAE1045, SAE4130, SAE4140 DIN:  ST52, ST52.3, ST52.4 EN:  E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470 GB:  20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn,  5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring 6. Delivery condition:  BK BKW BKS GBK NBK Q+T +C +LC +SR +A +N Cold rolled Cold drawn Stress relieved Annealed Normalized Quenched+Tempered 7. Bore treatment: Honing, skiving&roller burnishing 8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burn…