DIN 1629 Seamless tubes
DIN 1629 Seamless tubes with Special Quality Requirements. The main products of steel grade is DIN1629 ST37.0, DIN1629 ST44.0, DIN1629 ST52.0
DIN 1629 Size (mm):
- Outer Dimensions: 6.0mm – 219.0mm
- Wall Thickness: 1.0mm – 30 mm
- Length: max 12000mm
Application: It is used for manufacturing pipeline,vessel,equipment,pipe fittings .
The main products of steel / steel grade: DIN1629(ST37.0, ST44.0, ST52.0)
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
Painting: as requested.
Chemical Compositions(%) of DIN1629
| Grade | C | Si | Mn | P | S |
| ST37.0 | ≤0.17 | / | / | ≤0.040 | ≤0.040 |
| ST44.0 | ≤0.21 | / | / | ≤0.040 | ≤0.040 |
| ST52.0 | ≤0.22 | ≤0.55 | ≤1.70 | ≤0.040 | ≤0.035 |
Mechanical Properties of DIN1629
| Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation(%)L | Elongation (%)T |
| ST37.0 | ≥235 | 350-480 | 25 | 23 |
| ST44.0 | ≥275 | 420-550 | 21 | 19 |
| ST52.0 | ≥355 | 500-650 | 21 | 19 |
