PE Pressure & Water Supply Pipes

Pipes in this category are manufactured to ISO 4427 and EN 12201-2 for potable drinking water, pressurized agricultural irrigation, and industrial fluid transmission. The published product range comprises PE100 Water Pressure Pipe (P001) and PE80 Water Pressure Pipe (P002).

The fundamental mechanical distinction is the design stress: 8.0 MPa for PE100 versus 6.3 MPa for PE80. The nominal pressure rating follows the standard relation PN = 20 × design stress ÷ (SDR - 1). Consequently, to achieve a 16 bar rating (PN16), a PE100 pipe requires SDR 11, whereas a PE80 pipe requires SDR 9, which necessitates a substantially thicker wall.

The catalog dimensional envelope covers outside diameters from OD 16 mm up to 630 mm. Pressure classes range from PN4 to PN25, corresponding to standard series SDR 41, SDR 33, SDR 26, SDR 21, SDR 17, SDR 13.6, SDR 11, SDR 9, and SDR 7.4.

Supply packaging depends strictly on outside diameter: diameters up to 110 mm are produced in continuous coils of 100 m and 200 m to eliminate intermediate joints in distribution networks, while sizes from 63 mm upwards are delivered as straight 6 m and 12 m bars.

Pressure pipe jointing is accomplished through three engineering methods: butt fusion for straight bars and large-diameter mains, electrofusion fittings containing embedded heating coils for critical junctions, and mechanical compression fittings for coiled pipes up to 110 mm.

Pipes must rest on a prepared bed of uniform sand or screened soil free of sharp stones, with a minimum thickness of 10 to 15 cm. Sidefill compaction in staged lifts is essential to restrain lateral deflection. Prior to backfilling and commissioning, hydrostatic field pressure testing must be executed in accordance with the project specifications.

Choosing a pipe starts with three questions: what pressure the water runs at, what flow must be carried, and where and how the pipe will be laid. The working pressure sets the pressure class (PN), and the pressure class together with the diameter fixes the dimension ratio (SDR) and the wall thickness. The lower the SDR, the thicker the wall and the higher the pressure the pipe can carry.

The diameter is set by the flow and the length of the line; a pipe that is too small loses a lot of pressure, and one that is too large raises the cost of the pipe and the welding for no reason. Mains and municipal projects usually take PE100, while PE80 serves lower-pressure lines and irrigation. If you are not sure, send us the line details and we will check the size and pressure class with you.

The price of PE pipe follows the weight per metre, and the weight per metre follows the diameter and the wall thickness; that is why two pipes of the same diameter but different pressure classes are priced differently. For an accurate quotation, give the outside diameter, the pressure class or SDR, the material grade, the total length and the supply form (coil or straight length).

If the project follows a specification or standard, name it so the pipe is supplied to the same requirements. Fittings, tapping saddles and welding services can go on the same inquiry list so everything is checked together.