EN 10253-2 Type B buttweld pipe fittings in 1.0345 — P235GH carbon steel. The foundational European carbon steel grade for general pressure piping and pressure vessels, rated to 300°C. The "GH" designation (Glühend Hochtemperatur / elevated temperature) confirms suitability for pressure service at temperature. Equivalent to ASTM A234 WPB in scope and application. The standard choice for steam, water, gas, and general process piping throughout European installations.
| Grade | W.Nr. | Min Yield (MPa) | Max Temp | Typical Use |
|---|---|---|---|---|
| P235GH | 1.0345 | 235 | 300°C | General pressure piping — standard grade |
| P265GH | 1.0425 | 265 | 400°C | Higher strength / elevated temp service |
| P295GH | 1.0566 | 295 | 400°C | Thicker wall pressure vessel components |
| Element | Max |
|---|---|
| C (Carbon) | 0.16% |
| Si | 0.35% |
| Mn | 0.60–1.20% |
| P | 0.025% |
| S | 0.010% |
| W.Nr. | 1.0345 |
| EN Name | P235GH |
| ASTM Equivalent | A234 WPB |
| Standard | EN 10253-2 Type B |
Filler: ER70S-6 (MIG/TIG) or E7018 (SMAW). Low preheat for thin wall; preheat 100°C for t >25mm. No PWHT required for standard service.
