Table of Content
DIN 1629 St52.0 CS Seamless tube Specification
Most Common types of schedule 80 pipe
DIN 2609 Grade ST 52-0 Round pipe
DIN 2609 Grade St 52-0 CS EFW Pipe
Carbon Steel Cold Drawn Tube
DIN 1629 St52.0 Seamless tube
Carbon Steel ST 52 Clad Pipe
St 52-0 CS Square Tubes
Wall thickness of DIN 2609 Grade St 52-0 CS tube
| Execution | Cold worked tube or cold-drawn | Hot-rolled tube | Hot-rolled peeled tube | |
|---|---|---|---|---|
| Wall tolerance | mm | ± 0.30 ± 0.35 ± 0.40 | ± 0.7 ± (5 % x wt + 0.1) | ± 0.8 ± (5 % x wt + 0.2 ) |
| Size Range | OD < 40 OD 40 - 80 OD > 80 Wall Thickness < 6 WT 6 - 8 WT > 8 | OD – 80 OD > 80 Wall < 12 Wall - 12 | All sizes wall < 12 wall - 12 | |
| OD Tolerance | + 0.30/- 0 *+ 0.35/- 0 *+ 0.40/- 0 * | ± 0.4 ± 0.5 % of OD | + 0.25/- 0 | |
DIN 2609 Grade ST 52-0 tube chemical composition
| Carbon | max 0.22 |
|---|---|
| Phosphorous | 0.04 |
| Sulphur | 0.035 |
| Others | Al min 0.020 |
| Silicon | max 0.55 |
| Manganese | max 1.60 |
Carbon Steel ST 52 tube mechanical properties
| Yield Strength | MPa min | - |
|---|---|---|
| ksi min | - | |
| Tensile Strength | MPa min | 500 |
| MPa min | 650 | |
| ksi min | – | |
| Elongation A5 min | Percentage | 21 |
Equivalent of DIN 2609 Grade ST 52-0 SMLS tube
| Standards | Value |
|---|---|
| DIN | DIN 1629 Grade St 52-0 |
| BS | NFAGrade P355N |
| NFA | ASTM A 381 Grade Y 52 |
| EN | EN 10216-3 Grade P355N |
| ASTM | ASME SA 381 Grade Y 52 |
DIN 1629 St52.0 CS length tolerance
| Component length | mm | 1200-5000 | 10-100 | 600-1200 | 100-600 |
|---|---|---|---|---|---|
| OD 30-100 | + 5.0/- 0 | + 1.0/- 0 | + 3.0/- 0 | + 2.0/- 0 | |
| OD 100-254 | + 6.0/- 0 | + 2.0/- 0 | + 4.0/- 0 | + 3.0/- 0 |
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