● Resistant to natural gas, liquefied gas, artificial coal gas, and other chemical corrosion, no secondary anti-corrosion required;

● Lightweight, high strength, and strong wear resistance;

● Beautiful appearance, smooth inner and outer walls, low fluid resistance, and soft colors;

● Uses socket fusion welding and electro-fusion welding, simple installation, good gas tightness, safe and reliable;

● Long service life, pipeline system exceeds 50 years under normal usage, low depreciation;

● Pipes can be coiled, easy to transport, low engineering costs;

● Good flexibility, earthquake resistance, and excellent impact resistance;

● Waste materials are recyclable and do not pollute the environment.

Polyethylene pipe connections generally use electro-fusion connections and hot-melt butt welding. When connecting polyethylene pipes to metal pipes, steel-plastic transition joints or flange connections are used.

1. Electro-fusion connection: Suitable for connecting pipes and electro-fusion fittings, the steps are as follows:

① Cut the pipe with a rotary cutter to make the cross-section perpendicular to the axis, mark the insertion depth, and scrape the PE oxide layer on the surface with a rotary scraper.

② Wipe the dirt on the connection surface of the pipe and fittings with a clean cotton cloth.

③ When connecting, align the corresponding connecting parts to be on the same axis and insert the pipe into the fitting socket.

④ Use the electro-fusion welding machine to heat according to its specified time, so that a uniform flange is formed at the connection.

2. Hot-melt butt welding:

① Fix the two pipes on the welding machine fixture, use a milling cutter to mill the ends and adjust to keep the central axis aligned.

② Adjust the heating time according to the pipe diameter and ambient temperature, and heat the ends of the two pipes with a heating plate.

③ After heating, remove the heating plate, quickly butt the pipes together according to the pre-adjusted pressure, and let cool to finish.

3. Steel-plastic transition joint connection:

① First, connect the PE end of the steel-plastic transition fitting to the PE pipe.

② Connect the steel end of the steel-plastic transition fitting to the metal pipe using threads, flanges, or welding methods.