1. Pneumatic cylinder tube
2. Standard&material: STKM 13C, DIN2391 ST52, ST52.3, EN10305-1 E355, 34CrMo4, 42CrMo4, ASTM A519 SAE1020, SAE1026, SAE1045, SAE4130, SAE4140, etc.
3. Manufacture method: Hot rolled+bored+honed, cold drawn+honed
4. Delivery condition: BK, BKW, BKS, GBK, NBK.
5. Straightness: 0.5mm/1000mm max, 0.8mm/1000mm max, 1.2mm/1000mm max.
6. Tolerance of ID: H8, H9, H10
7. Tolerance of W. T: +/-5%
8. Roughness of internal surface: 0.4um max.
9. Packing: Standard export sea-worthy packing.
10. External surface polishing to be /confirm/ied.