Several welding methods of plastic pipe joint

Generally speaking, the construction of plastic pipe joints mostly adopts welding method, whether it is pipe fitting welding, electric heating welding belt welding or plastic extrusion welding gun welding, the material and the pipe surface are fused by heating.

The welding of plastic pipe fittings usually refers to Haval sleeve connection, such as HDPE pressure pipes used in common gas pipelines and water supply pipelines, which are generally welded by electric melting pipe fittings, and of course, by hot melting butt welding machine. Plastic extrusion welding torch is usually used to repair pipeline surface damage, but it is only limited to minor repairs. After all, such pipelines are usually pressure-bearing pipelines and need to be safe and reliable.

Fused tape welding is usually used in municipal drainage and sewage fields and oil and gas pipeline joints. This is a popular connection method in China at present, which is characterized by low cost, high reliability and simple construction. However, electrothermal fusion welding also has unstable factors, such as the position of the electrode, which is easy to cause water leakage. Therefore, in daily operation, the construction party will usually strengthen electric welding, that is, use plastic extrusion welding gun for sealing operation to ensure the tightness of pipeline joints.

The appearance and use of plastic extrusion welding torch is the inevitable trend of the development of plastic industry. Its principle is based on a large-scale extruder, and we can also think of it as a small-scale extruder. Its working principle is the same as that of an extruder, which extrudes materials by melting and carries out construction through a mold with a specific shape. Plastic extrusion welding torch is widely accepted by various plastic industries because of its small size and portability, including plastic pipeline construction and maintenance, automobile, advertising, environmental construction and road construction.