630 mm HDPE Pipe
Catalogue specifications for 630 mm polyethylene pipe.
Published
630 mm HDPE pipe means pipe with a 630 mm outside diameter. That figure alone does not define an order — at this diameter the factory produces 8 different pressure classes, which differ in wall thickness and therefore in bore, weight and price. What completes an order is the diameter plus the SDR and the material grade.
At 630 mm, wall thickness ranges from 12.3 to 57.2 mm and nominal pressure from 2.5 to 16 bar, depending on the SDR and on whether the material is PE80 or PE100.
Pressure classes available at this diameter
630 mm outside diameter — wall thickness by SDR
| SDR 51 | Wall thickness 12.3 mm — nominal pressure 2.5 bar in PE80, 3.2 bar in PE100 |
|---|---|
| SDR 41 | Wall thickness 15.4 mm — nominal pressure 3.2 bar in PE80, 4 bar in PE100 |
| SDR 33 | Wall thickness 19.3 mm — nominal pressure 4 bar in PE80, 5 bar in PE100 |
| SDR 26 | Wall thickness 24.1 mm — nominal pressure 5 bar in PE80, 6 bar in PE100 |
| SDR 21 | Wall thickness 30 mm — nominal pressure 6 bar in PE80, 8 bar in PE100 |
| SDR 17 | Wall thickness 37.4 mm — nominal pressure 8 bar in PE80, 10 bar in PE100 |
| SDR 13.6 | Wall thickness 46.3 mm — nominal pressure 10 bar in PE80, 12.5 bar in PE100 |
| SDR 11 | Wall thickness 57.2 mm — nominal pressure 12.5 bar in PE80, 16 bar in PE100 |
Figures from the factory catalogue (DIN 8074 / ISO 4427-2). A lower SDR means a thicker wall, a higher pressure rating and a smaller bore.
The nominal pressure figure applies at 20 °C. If the line runs warmer, the real allowable pressure is lower and has to be calculated with the temperature derating factor.
Supply form
- SDR 41 (3.2 bar): straight lengths of 12 m
- SDR 33 (4 bar): straight lengths of 12 m
- SDR 26 (5 bar): straight lengths of 12 m
- SDR 21 (6 bar): straight lengths of 12 m
- SDR 17 (8 bar): straight lengths of 12 m
- SDR 13.6 (10 bar): straight lengths of 12 m
- SDR 9, 7.4, 6 (16, 20, 25 bar): straight lengths of 12 m
What to state when ordering
- Outside diameter: 630 mm
- SDR or nominal pressure — without it the enquiry cannot be priced
- Material grade: PE80 or PE100
- Application: water supply, gas, irrigation, sewerage or industrial
- Length, supply form and delivery destination
FAQ
- What wall thickness does 630 mm HDPE pipe have?
- It depends on the pressure class. At 630 mm the catalogue offers 8 classes, from SDR 51 at 12.3 mm to SDR 11 at 57.2 mm. Without an SDR, the wall thickness is undefined.
- What is the pressure rating of 630 mm pipe?
- From 2.5 to 16 bar, depending on the SDR and material grade. Those figures apply at 20 °C; above that they must be corrected with the temperature derating factor.
- Is 630 mm supplied in coils or straight lengths?
- In 12 m straight lengths; at this wall thickness the pipe cannot be coiled.
- How is 630 mm HDPE pipe priced?
- By weight, not by the metre. Weight per metre follows from diameter, wall thickness and material density — which is why 630 mm costs differently in each SDR. Quote the diameter, SDR and quantity to get a current price.