Gas Cylinder Pipe
Request a Quote
Standard:
GB18248 Standard of China Metallurgical Industry
Application:
For gas bottle manufacturing
| Grade | C | Si | Mn | P | S | P S | Cr | Mo | Ni | Cu |
| 37Mn | 0.34~0.4 | 0.1~0.3 | 1.35~1.65 | ≤0.03 | ≤0.03 | ≤0.055 | ≤0.3 | - | ≤0.3 | ≤0.2 |
| 30CrMo | 0.26~0.34 | 0.17~0.37 | 0.4~0.7 | ≤0.03 | ≤0.03 | ≤0.055 | 0.8~1.1 | 0.15~0.25 | ≤.3 | ≤0.2 |
| 35CrMo | 0.32~0.4 | 0.17~0.37 | 0.4~0.7 | ≤0.03 | ≤0.03 | ≤0.055 | 0.8~1.1 | 0.15~0.25 | ≤0.3 | ≤0.2 |
| 34CrMo4 | 0.3~0.4 | 0.15~0.35 | 0.5~0.8 | ≤0.02 | ≤0.01 | ≤0.025 | 0.9~1.2 | 0.15~0.25 | ≤0.4 | - |
Allowed tolerances of OD and WT
| Pipe Category | OD Tolerances % | WT Tolerance% |
| Hot Rolled | ±1.0 | 15 -10 |
| Cold Drawn | ±0.75 | 12.5 -10 |
| Grade | Specification | Executive Standard | ||
| Outer Diameter /mm | Wall Thickness /mm | Economical Length /m | ||
| 37Mn 37Mn/1 37Mn/2 30CrMo 35CrMo 34CrMo4 34CrMo4/1 34CrMo4/2 34CrMo4A 30CrMoQC 4130X 30CrMoE 42CrMoE | 10 ~ 127 | 1 ~ 20 | 6 ~ 12.0 | GB18248 , GB28884 and Technical Protocol |
| 42 ~ 114 | 3.5 ~ 12 | 6 ~ 12.2 | ||
| 73 ~ 180 | 3.8 ~ 22 | 6 ~ 12.2 | ||
| 68 ~ 254 | 10 ~ 55 | 6 ~ 12.2 | ||
| 140 ~ 368 | 6 ~ 42 | 6 ~ 12.2 | ||
| 318 ~ 720 | 14 ~ 120 | 4 ~ 12.5 | ||
Related products
Send Message
Other Products
Most Recent
More
Other Products
Videos
