The material of this chemical plastic barrel is generally made of high-density polyethylene material, which can also be called low-pressure polyethylene. This kind of plastic barrel welding torch is not well welded. It can also be made of high-pressure polyethylene. The material itself is very soft and has good toughness. At present, there is no glue to bond. If it has to be bonded, it must be treated on the surface before bonding. High density polyethylene is a highly crystalline, non-polar thermoplastic resin. Its original ecology is a translucent object with a milky white surface. High-density polyethylene in chemical plastic barrels has good electrical properties, especially high dielectric strength, high impact resistance, and good performance at room temperature or low temperature.