DIN Standards
Steel Pipe for Pipeline, Vessel and Equipment Structure
Standard
DIN1629
Application
It is used for manufacturing pipeline, vessel, equipment, pipe fittings and steel structure.
Main Steel Tube Grades
St37.0, St44.0, St52.0
Chemical Composition
| Standard | Grade | Chemical Composition % | |||||
| C | Si | Mn | P | S | Cr | ||
| DIN 1629 | St37.0 | ≤0.17 | / | / | ≤0.04 | ≤0.04 | / |
| St44.0 | ≤0.21 | / | / | ≤0.04 | ≤0.04 | / | |
| St52.0 | ≤0.22 | ≤0.55 | ≤1.70 | ≤0.04 | ≤0.04 | / | |
Mechanical Properties
| Standard | Grade | Mechanical Properties | ||
| Tensile Strength MPa | Yield Strength MPa | Elongation % | ||
| DIN 1629 | St37.0 | 350-480 | ≥235 | ≥25 |
| St44.0 | 420-550 | ≥255 | ≥21 | |
| St52.0 | 550-650 | ≥270 | ≥21 | |
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