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1. Seamless steel tubes for fluids: GB8163-99
2. seamless steel tubes for boilers: GB3087-1999
3. High pressure seamless tubes for boilers: GB5310-95 (ST45.8- type III)
4. High pressure seamless steel tubes for chemical fertilizer equipment: GB6479-1999
5. Seamless steel pipe for geological drilling: YB235-70
6. Seamless steel pipe for petroleum drilling: YB528-65
7. seamless steel pipe for petroleum cracking: GB9948-88
8. seamless pipe for petroleum drill collar: YB691-70
9. seamless steel tube for automobile axle: GB3088-1999
10. Seamless steel tubes for ships: GB5312-1999
11. cold drawn cold-rolled precision seamless steel tube: GB3639-1999
Material | 1020 1035 1045 27SiMn 30MnNbRE |
Standard | GB/T 17396 |
Production method | Hot rolled |
Length | 6-11.5m |
O.D. | 100-900mm |
Wall thickness | 6-30mm |
| C | Si | Mn | Nb | RE | Cr | Ni | Cu | Mo | P | S |
1020 | 0.18-0.23 |
| 0.30-0.60 |
|
|
|
|
|
| 0.035 | 0.035 |
1035 | 0.32-0.38 |
| 0.60-0.90 |
|
|
|
|
|
| 0.035 | 0.035 |
1045 | 0.37-0.44 |
| 0.60-0.90 |
|
|
|
|
|
| 0.035 | 0.035 |
27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 |
|
| 0.30 | 0.30 | 0.20 | 0.15 | 0.035 | 0.035 |
30MnNbRE | 0.27-0.36 | 0.20-0.60 | 1.20-0.60 | 0.020-0.050 | 0.02-0.04 | 0.30 | 0.30 | 0.20 | 0.15 | 0.035 | 0.035 |
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