PPH pipes are produced by combining propylene monomers with a small amount of ethylene monomers, which are randomly dispersed throughout the long chains of propylene under heat, pressure, and the action of a catalyst. The random incorporation of ethylene reduces the crystallinity and melting point of the polymer, alters the material's impact resistance, long-term static water pressure resistance, long-term heat and oxygen aging resistance, and processing and molding properties. PPH pipes can withstand significant external loads, eliminating the need for lateral support from fermentation tank soil, thus requiring less flexibility in backfill soil compared to flexible pipes.

PPH pipes are primarily used for the conveyance of pressurized water, and only those that can withstand internal pressure are categorized into 9 grades. They have a higher roughness coefficient than others, but also come at a higher price. PPH pipes are available in two types: lined and embedded. The steel ring-shaped spigot and socket connections offer strong sealing and combine certain advantages of both steel and concrete pipes. As the pressure machine slider descends, the cutting blade tip makes contact with the pipe wall, causing elastic deformation in the wall. As the cutting blade continues to descend, the pressure gradually increases. When the pressure reaches a certain level, the material at the point of contact between the blade tip and the pipe wall undergoes plastic deformation, and the blade tip begins to penetrate the material. As the penetration depth of the blade tip increases, a high concentration of stress and strain occurs, leading to the material's instantaneous fracturing, and the blade tip then enters the pipe cavity.