1. Commodity: ASTM A519 cold drawn seamless mechanical tubing
2. Standard specification: ASTM A519 1010,1020,1026,1045,1518,1524,1541,4130,4140,4145,4340, 8620, BS 6323-4 CFS 3,CFS 4, CFS 5, CFS 6,CFS 7, CFS 8, CFS 10, CFS 11.
3. Size range: 10mm*1mm-356mm*15mm
4. Manufacture method: Cold rolled, hydraulic cold drawn
5. Delivery condition:
| BK | BKW | BKS | GBK | NBK | Q+T |
| +C | +LC | +SR | +A | +N | Q+T |
| Cold rolled | Cold drawn | Stress Relieved | Annealed | Normalized | Quenched+tempered |