Heat-resistant polyethylene PE-RT elastic welding pipe fitting is a special connection pipe fitting for PE-RT pipe, which is made of the same material as the pipe and adopts pure imported PE-RT raw materials to truly realize seamless welding with the same material. Considering the system, it is recommended to use socket fusion connection, and the wall thickness of the pipe fittings should not be lower than the wall thickness of the pipe. The elastic welding tube is designed for welding aluminum alloy plastic-lined PE-RT pipe and ordinary PE-RT pipe dn20-dn315 large diameter.