The technical hub collects what engineers ask us for most: SDR and pressure rating tables at working temperature, derating factors, butt fusion and electrofusion parameter charts, flow and head-loss calculations, thermal expansion guidance and CAD files for our fittings.
Specification templates are provided in editable format so consultants can drop our product range into a tender document without retyping dimensions.
Key features
- SDR / pressure rating tables with temperature derating
- Butt fusion and electrofusion parameter charts
- Flow, head-loss and thermal expansion calculators
- CAD files (DWG / STEP) for the fitting range
- Editable specification templates for tender documents
PE100 pressure class by SDR
| SDR | Pressure class | Nominal pressure (bar) |
|---|---|---|
| SDR 26 | PN 6 | 6.0 |
| SDR 21 | PN 8 | 8.0 |
| SDR 17 | PN 10 | 10.0 |
| SDR 13.6 | PN 12.5 | 12.5 |
| SDR 11 | PN 16 | 16.0 |
| SDR 9 | PN 20 | 20.0 |
| SDR 7.4 | PN 25 | 25.0 |
SDR is outside diameter divided by wall thickness, so a lower SDR means a thicker wall and a higher rating. Figures are for water at 20 °C; derate for higher temperatures. PE80 is produced to the same SDR steps at one class lower — ask if your tender cites it.