Pipes used for water-supplies installations
HDPE 100
Pipes used for water-supplies installations are made of high-density polyethylene PE80 or PE100, according to the SRPS ISO 4427:2001 standard ( MRS ≥ 8 Mpa -i.e. MRS ≥ 10 MPa), having a quality that guarantees the same amount of pressure endurance after 50 years of use.
Polyethylene pipes are intended for public, private and industrial water-supply systems. For public water-supply systems there are project plans that define the standards for the pipes used in them, and these are approved by the state water supply institutions. As for private and industrial use, there are no specific requirements for the pressure endurance of the pipes. The allowed permanent thermal exposure is up to +60ºC, while the allowed temporary thermal exposure is +80ºC. The pipes are resistant to low temperatures as well.
Polyethylene pipes have smooth both inner and outer surfaces and are produced in diameters ranging from Ø20 to Ø500 mm, to withstand operating pressures of 4, 6, 8, 10, 12.5,16, 20, 25 and 30 bar. The pipes are supplied in coils, in a length range of between 50 and 500 metres, or as rods, 6m or 12m long.
The standard colour is black, with co-extruded blue lines. The pipes are marked with the following inscriptions inserted on every meter of length: the kind and type of material, outer diameter, operating pressure, SRPS G.C6.605, manufacturer’s code and the year of production.
They are packed in coils, in the length range of 50 to 500m. Alternatively, they are supplied in rods 6 or 12 metres long, depending on the diameter and pressure resistance, the smallest diameter of the coil core must not be less than 18 x d and in any case it must guarantee that the roundness of the pipe is preserved.
The listed diameter of the pipe is its outer diameter. The values stated in the tables and the quality of the pipes correspond to the European norm EN 12.201 and the SRPS ISO 4427:2001 standard.
The joining of the pipes can be done in the form of a dismantling connection (using PE,PP,LG joints) or a fixed connection (using electro-fusion or butt welding). We manufacture fittings made of the same material, securing connections of the highest quality and efficiency.
Every pipeline that is built must be pressure-tested before it is approved for use, in order to make sure that the pipes, connectors, parts and components are all well integrated and flawless.
PN – pressure
SDR – pipe outer diameter: wall thickness ratio