High-density polyethylene(HDPE) pipes provide many benefits for many fire-fighting applications. Compared with materials such as ductile iron pipes and steel pipes, they are non-corrosive, have excellent chemical resistance and excellent wear resistance. HDPE pipes have been widely used in mining and chemical industry, fire protection industry. In addition to the performance and life cycle cost advantages, PE pipes are light in weight, long in pipe length and flexible, so they are easy to install and safe.

Materials. High quality and virgin PE 100 and PE 100-RC materials that are listed by the PE 100+ association.

Pipes. Pipes should be produced according to ISO 4427, EN 12201, ASTM 3350,and/or AWWA C906.

Fittings. Fittings should be produced according to ISO 4427 and EN 12201, and certified according to EN 12201 standard. Whenever available, injection molded fittings should be used preferably.

Approved Manufacturer. Manufacturer must be ISO-9001 and ISO 14001 certified. An inspection certificate according to EN 10204 (3.1) must be provided by the manufacturer on request. Pipes and fittings should be produced and supplied by the same company as a complete system.

Pressure rating. HDPE pipes and fittings shall have a pressure rating at operating temperature of 20 °C based on minimum 50 year design life and including a safety factor of 1.25. The pressure class of high-density polyethylene(HDPE) pipes and fittings for the fore fighting should be from PN16 to PN32(SDR11 to SDR6).

Bingo HDPE pipes and fittings for firefighting systems are generally joined by heated tool butt welding, electrofusion welding or mechanically through the use of flanges. The appropriate connection technique depends on the location and the project requirements itself. Detailed guidelines for all connection techniques are available on request.

1.Heated tool butt welding

At the heated tool butt welding process, the joining zones of the components to be welded are aligned under pressure on the heated tool (alignment), heated up to the welding temperature with reduced pressure (heating up) and joined under pressure (joining) after removal of the heated tool (changeover).

2.Electrofusion welding

Bingo Electro-fusion fittings can be used to weld the required components using resistance wire (heating wire). The heating wire is completely embedded in the fitting. This provides a smooth inner surface and allows an easy cleaning and insertion of the pipe ends/spigots. Universal welding machines are suitable and provide the required power supply.

3.Flange connections:

Flange connections are used to create detachable connections between PE and PE, or as transition from PE to other materials (e.g steel, ductile iron, fire hydrant. For example when pipes are connected to valves).