In the underground pipe gallery in midsummer in the south, the surface temperature is approaching 40 ° C, the underground environment is hot and humid, and the pipeline is in a "stew" state above 60 ° C for a long time; in the high-temperature wastewater pipeline in the industrial plant area, the wastewater at 40-80 ° C continues to flow, which places strict requirements on the temperature resistance of the pipeline; and in the hot water transportation system of the hot spring resort, the hot spring water at 50-70 ° C needs to stabilize the pipeline to ensure safety - in these high-temperature scenarios, traditional plastic pipes are often deformed, aged and even leaked due to high temperature, but the HDPE carat pipe can "calmly cope" and become the first choice for many projects. The test of high temperature environment on pipelines is far more than "temperature resistance": long-term high temperature will cause material creep (slow deformation), if the creep resistance is poor, the pipeline may be flattened and blocked; high temperature accelerates aging, reducing strength and sealing performance; chemical substances in industrial wastewater may also corrode pipelines. Therefore, high temperature pipelines need to meet the four requirements of high temperature resistance, creep resistance, aging resistance and reliable sealing at the same time. The advantages of AD HDPE carat pipes come from high-quality HDPE resins: HDPE has a stable long-term working temperature of more than 80 ° C and a short-term peak of 100 ° C. It has excellent creep resistance and maintains a stable shape under long-term high temperature. The spiral winding structure of the carat pipe further enhances its advantages - the inner smooth pipe ensures smooth water flow, the outer spiral-reinforced rib enhances the ring stiffness, and the resistance to external pressure is stronger. It can resist soil extrusion or pipe gallery pressure even at high temperatures. Sealing performance is the key to "not dropping the chain" at high temperatures: using hot melt/electric fusion connection, the interface is integrated with the pipe, and there will be no gaps due to thermal expansion and contraction at high temperatures, completely eliminating leakage. In practical applications, the AD HDPE carat pipe has been verified in multiple scenarios: a 45 ° C wastewater pipeline in an industrial plant in the south runs for 3 years without deformation and leakage; a hot spring resort has stable hot water transportation at 60 ° C; and an underground pipe gallery in Shenzhen has creep resistance to avoid pipeline collapse at 65 ° C. For the engineering side, the benefits of choosing AD HDPE carat pipe are real: the service life is more than 50 years, reducing maintenance costs; stable performance reduces the risk of leakage; light weight, fast installation, and shortening the project cycle. From underground pipe corridors to industrial plants, from hot springs to municipal drainage, AD HDPE carat pipe provides a "rock-solid" pipeline solution for high temperature environments with the dual advantages of materials and structures, so that the project has more confidence before high temperature challenges.