Several ways of welding plastic pipe joints

Generally speaking, the construction of plastic pipe joints mostly adopts the welding mode. Whether it is pipe fitting welding, electric heating tape welding or plastic extrusion welding torch welding, the fusion connection is performed by heating the material and the surface of the pipe.

Welding of plastic pipe fittings usually refers to the Haval sleeve connection. For example, HDPE pressure pipes used for common gas pipelines and water supply pipelines are usually welded by electric heating pipe fittings. Of course, there are also welding using hot melt butt welding machines. When experiencing damage to the surface of pipes, plastic extrusion welding torches are usually used for repair tools, but only for small repairs. After all, such pipes are usually pressure-containing pipes and need to be safe and reliable.

Electrothermal melting belt welding, usually used in municipal drainage and sewage fields and oil and gas pipeline joints. This is currently the most popular connection method in China. It is characterized by low cost, high reliability, and easy construction. However, there are also unstable factors in the welding of electric heating tape. For example, the location of the electrode is a place that is likely to cause water leakage. Therefore, In daily operations, the construction party usually reinforces the electric hot-melt tape welding, that is, the plastic extrusion welding gun is used for sealing to ensure the tightness of the pipe joint.

The emergence and use of plastic extrusion welding guns is an inevitable trend in the development of the plastics industry. Its principle is based on a large extruder. We can think of it as a small extruder, and its working principle is like an extruder. Melt extrusion of the material and work through a specific shape of the mold. Plastic extrusion welding guns are widely accepted by various plastics industries because of their small size and ease of portability. The industries involved include plastic pipe construction and repair, automotive, advertising, environmental construction, and road construction.