PPH pipe is a homopolypropylene pipe made of polypropylene modified by β, which is a new type of pipe developed in recent years. PPH tube has a uniform and fine Beta crystal structure, with good heat setting, high temperature resistance, good chemical resistance, creep resistance, high tension, good insulation, insoluble in organic solvents, non-drying, non-toxic and other characteristics. Suitable for chemical factories, electronic semiconductor factories, pharmaceutical factories, sewage treatment plants and other industries. It has been widely used in the fields of high acid and alkali chemical product conveying system, sewage conveying system, environmental engineering and other fields.