In fact, the machines used for PE hot-melt pipe connection are different from those used for electric fusion connection. Electric fusion connection uses electric fusion welding machine. At present, Tianjin Zhengwei is used more in the market, and hot-melt connection uses hot-melt welding machine, with more manufacturers. In addition, electrofusion requires electrofusion pipe fittings with copper wire inside, and the inner wall of the copper wire electrified pipe fittings and the outer wall of the pipe are fused and bonded together by heating; Hot melt is the process of pipe section heating and then butt welding.

The hot melting of PE hot-melt pipe fittings is to heat and melt the materials with special equipment, and connect the materials after cooling. In the project, the general hot-melt pipe fittings are all hot-melt, which is convenient and economical for construction; In fact, electric melting is also a kind of hot melting. The heating coil has been pre-set in the material. When connecting, it is heated and melted by electricity. The welding quality is good, but the material is more expensive. It is suitable for the occasions where it is inconvenient to use appliances for hot melting or where the welding requirements are high; Welding is to melt the other solder and the parts to be connected, the most common are metal welding, fusible plastic plate, etc.

The electric fusion connection of PE hot-melt pipe needs special electric fusion sleeve to be connected by electric fusion welding machine, and the sleeve is heated by electricity to complete welding; Hot melt welding generally means that the electric welding machine for hot melt welding needs to heat the pipe ends of the hot plate between the pipes to complete the welding; Another kind of hot melt socket welding with special pipe sleeve and pipe with heating and socket welding type.