From the 1980s to the early 1990s, with the continuous development of polymerization catalysts and polymerization process technologies, the long-term strength and various long-term properties of polyethylene with a minimum required strength (MRS) of 8.0 MPa were controlled. Since then, MDPE and HDPE have rapidly occupied the urban water supply and urban gas markets.
Since the 1990s, on the basis of PE80 grade HDPE pipes, the minimum required strength (MRS) and stress cracking resistance have been further improved. The PE100 grade raw material with a minimum required strength (MRS) of 10.0 MPa is mainly used in urban water supply pipes and urban gas pipes. Gas PE pipe materials are mainly made from PE resin and added with appropriate additives, processed through mixing, extrusion, sizing, online ultrasonic thickness measurement, cooling, cutting and other processes. The company's gas PE pipe materials are produced using imported extrusion equipment from Germany, and the product quality meets or exceeds the national standard GB/T 15558.1-2015, and is suitable for urban gas pipeline projects.
The outstanding quality of PE gas pipes
◇ Longevity - Under the specified temperature and pressure conditions, PE pipes can be safely used for over 50 years.
◇ Excellent corrosion resistance - Apart from a few strong oxidants, it can withstand the erosion of various chemical media; there is no electrochemical corrosion.
◇ Good flexibility - PE pipes can be coiled.
◇ Excellent impact resistance - The PE pipe has good toughness and high impact strength. Even if heavy objects directly press against the pipe, it will not cause the pipe to rupture.
◇ Reliable connection performance - The strength of the heat-melt or electric-melt interfaces of PE pipes is not lower than that of the pipe body itself. The joints will not break due to soil movement or the action of loads.
◇ Excellent construction performance - The pipes are lightweight, the welding process is simple, the construction is convenient, and the overall project cost is low.
