Polyethylene (PE) pipes and fittings for water supply

Polyethylene (PE) Pipes and Fittings for Water Supply

Polyethylene (PE) pipes for water supply are extruded using high-density polyethylene resin or polyethylene as the main raw material, modified with appropriate additives, and formed through a unique molding process. The product performance meets the requirements of advanced international standards (European standards).
Implementation Standard: Polyethylene (PE) pipes and fittings for water supply are manufactured in accordance with national standards.

■ The heating time and temperature for heat fusion connection must comply with the specified requirements.
■ The pressure holding and cooling time during heat fusion connection must adhere to the standards; during this period, the connection must not be moved, and no external force should be applied to the connected parts.
Socket fusion connection must comply with the following regulations:
(1) Cut the PE pipe to the required length using a pipe cutter or scissors.
(2) Mark the insertion depth on the pipe.
(3) Heat the fusion tool to 230±10°C (for national standard pipes) or 200±5°C (for enterprise standard pipes).
(4) Simultaneously heat the PE pipe and fitting, then insert the pipe into the fitting (hold briefly after insertion; twisting is strictly prohibited during heating, insertion, and cooling).
(5) Allow sufficient cooling time before releasing, completing the operation.
(6) After installation, pressure testing must be conducted and approved before burying and putting into service.
Butt fusion connection must comply with the following regulations:
(1) Place the two PE pipes to be connected simultaneously in the fusion tool fixture (the fixture can be adjusted according to the pipe diameter), with the other end of each pipe supported by a pipe stand to ensure they are level.
(2) Use an electric铣刀 to trim the pipe ends flat, ensuring full contact between the two surfaces.
(3) Heat the electric heating plate to 230±10°C (for national standard pipes) or 200±5°C (for enterprise standard pipes), place it between the two pipe ends, and operate the hydraulic device to bring both ends into full contact with the heating plate for heating.
(4) Remove the heating plate, reactivate the hydraulic device to fully join the molten pipe ends, and lock the hydraulic device (to prevent rebound).
(5) Allow sufficient cooling time before releasing, completing the operation.
(6) After installation, pressure testing must be conducted and approved before burying and putting into service.

PE Pipes · Welding Parameters