National Standards
Tube for Chemical Fertilizer Equipments
Standard
GB6479
Application
It is excellent quality carbon steel, low alloy steel and alloy steel pipes for high pressure fertilizer equipments and pipelines.
Main Steel Tube Grades
20, 16Mn, Q345 etc.
Chemical Composition
| Grade | Chemical Composition % | ||||
| C | Si | Mn | P | S | |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 |
| 16Mn | 0.12-0.20 | 0.20-0.60 | 1.20-1.60 | ≤0.030 | ≤0.030 |
Mechanical Properties
| Grade | Mechanical Properties | ||
| Tensile Strength MPa | Yield Strength MPa | Elongation % | |
| 20 | 410-550 | ≥245 | ≥24 |
| 16Mn | 490-670 | ≥320 | ≥21 |
