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Petroleum cracking tube
Application Areas:
National Service Hotline:+86-0510-86160120
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Number of views:
1000
Product serial number
Specification Range:
∮6-1100×1-100mm
Use:
For the manufacture of furnace tubes, heat exchanger tubes and pipes for petroleum refineries
Main Material:
GB9948 (10, 20, Q345, 15CrMo, etc.)
Quantity
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+
Stock:
0
Product description
Parameters
● Standard
GB9948-2013 Main steel grades: 10、20、12CrMo、15CrMo
● Uses
For the manufacture of furnace tubes, heat exchanger tubes and pipes for petroleum refineries
● Size deviation
|
Steel Tube Types |
Tube size |
Allowable Deviation |
|
|
Hot rolled tube |
Outer diameter | ≤ 159 | ± 1.00% |
| > 159 | ± 1.25% | ||
| Wall thickness | ≤ 20 | ± 12.5% | |
| > 20 | ± 10.0% | ||
| Cold-drawn tube | Outer diameter | ≤ 30 | ± 0.20 |
| 30~50 | ± 0.30 | ||
| > 50 | ± 0.8% | ||
| Wall thickness | ≤ 3 | +12%－10% | |
| > 3 | ± 10% | ||
● Chemical composition, mechanical properties
| Standard | Steel grade | Chemical composition (%) | ||||||
| C | Si | Mn | Ni | Cr | Mo | P.S | ||
| GB9948 | 10 | 0.17 ～ 0.14 | 0.17 ～ 0.37 | 0.35 ～ 0.65 | ≤ 0.25 | ≤ 0.15 | / | ≤ 0.035 |
| 20 | 0.17 ～ 0.24 | 0.17 ～ 0.37 | 0.35 ～ 0.65 | ≤ 0.25 | ≤ 0.25 | / | ≤ 0.035 | |
| 12CrMo | 0.08 ～ 0.15 | 0.17 ～ 0.37 | 0.40 ～ 0.70 | ≤ 0.30 | 0.40 ～ 0.70 | 0.40 ～ 0.55 | ≤ 0.035 | |
| 15CrMo | 0.12 ～ 0.18 | 0.17 ～ 0.37 | 0.40～ 0.70 | ≤ 0.30 | 0.80 ～ 1.10 | 0.40 ～ 0.55 | ≤ 0.035 | |
|
Mechanical properties |
Tensile strength (MPa) | Tensile strength (MPa) | Elongation(%) | |||||
| 10 | 330 ～ 490 | ≥ 205 | ≥ 24 | |||||
| 20 | 410 ～ 550 | ≥ 245 | ≥ 21 | |||||
| 12CrMo | 410 ～ 560 | ≥ 205 | ≥ 21 | |||||
| 15CrMo | 440 ～ 640 | ≥ 235 | ≥ 21 | |||||
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