PE gas pipes and PE water supply pipes are both types of PE pipes. PE, also known as polyethylene, is internationally classified into five grades: PE32, PE40, PE63, PE80, and PE100. The materials used for PE water supply pipes and PE gas pipes are mainly PE80 and PE100. There is no grading system for specialized materials for polyethylene pipes in China, which makes it difficult for domestic manufacturers of polyethylene gas and water supply pipes to choose raw materials and poses significant risks to the use of polyethylene pipes.
Therefore, the National Bureau of Standards has made a lot of revisions in the new standard GB/T13663-2000, stipulating that different grades of PE80 and PE100 for water supply pipes correspond to different pressure strengths, and removing the tensile strength performance in the old standard, and increasing the elongation at break (greater than 350%), emphasizing basic toughness.
The domestic production situation of the reproducing industry is mainly dominated by PE100 raw materials. This is mainly due to the technological progress in recent years, and the price of PE100 raw materials has become similar to that of PE80. However, in terms of performance, PE100 is definitely superior to PE80 raw materials. In addition, the extrusion production line equipment for PE water supply pipes and PE gas pipes continues to improve, and the polyethylene pipes we produce have approached international standards.