1. Cold rolled seamless tube ready for honing
2. Standard&material: DIN2391-2 ST52, ST52.3,ST52.4, EN10305-1 E355,C45E,34CrMo4,42CrMo4, ASTM A519 SAE1020,SAE1035,SAE1045,SAE1026,SAE4130,SAE4140,etc.
3. Manufacture method: cold rolled
4. Delivery condition: BK,BKW,BKS,GBK,NBK
5. Tolerance of ID: -0.3mm/-0.5mm ready for honing, -0.5mm/-0.8mm ready for skiving&roller burnishing.
6. Tolerance of W.T: +/-5%
7. Straightness: 0.5mm/1000mm max for tubes below 3meters, 0.8mm/1000mm max for tubes of 3m-6m, 1.2mm/1000mm max for tubes above 6meters.
8. Packing: standard export packing.
9. External surface polishing service can be provided.
10. Mechanical stamp on each piece of tube can be provided.