PE100 Water Pressure Pipe

PE100 water pressure pipe is one of the most widely used pressure pipes for urban and rural water networks, transmission mains, pressurised agricultural irrigation and industrial service. The number 100 refers to a minimum required strength (MRS) of 10 MPa: the compound is designed to carry that stress at 20 °C over a 50-year design life.

The pipe is made to ISO 4427 and EN 12201-2, and its dimensions are defined by outside diameter and SDR. It is black with longitudinal blue stripes that mark it as a water pipe, and the carbon black in the compound protects it against UV radiation.

SDR is the ratio of outside diameter to wall thickness. A lower SDR means a thicker wall and a higher allowable pressure. For PE100, with a design stress of 8 MPa, PN = 20 × 8 ÷ (SDR − 1), so SDR 17 gives PN10, SDR 11 gives PN16 and SDR 7.4 gives PN25.

PN is defined for water at 20 °C; at higher temperatures a pressure derating factor from the standard must be applied. Besides operating pressure, account for surge, elevation changes and the field test pressure. The final choice belongs to the project designer.

PE100 pipes are joined by butt fusion, electrofusion or compression fittings. Compression fittings are typically used for small diameters up to 110 mm, while butt fusion and electrofusion are common for mains and larger sizes. Welding must be done with suitable equipment, clean surfaces and a trained operator.

Lay the pipe on a sand bed free of sharp stones and compact the backfill in layers. The flexibility of polyethylene allows gentle curves without extra fittings. Pressure-test the line to the designer's procedure before commissioning.

Small diameters (up to 110 mm) are supplied in coils, and sizes from 63 mm in 6 m and 12 m bars. Do not drag pipes on the ground and keep them away from sharp objects. Store bars on a flat surface with a limited stack height, and store coils lying flat.

For a quotation, enter the size, pressure class and quantity in the quote request form on this page; our sales team will confirm the approximate weight and the price.