Introduction to PVC Pipe Products Polyvinyl chloride pipes (commonly referred to as PVC pipes in English) are plastic pipes that were among the earliest to be developed and applied. They are produced by heating and extruding a mixture of polyvinyl chloride resin combined with auxiliary materials such as stabilizers, lubricants, and color masterbatches. After years of accumulated experience in processing and application, PVC pipes have now established standardized production and processing techniques, along with a comprehensive supporting infrastructure. Coupled with their economic, environmentally friendly, and cost-effective advantages, PVC pipes have become the dominant product in the rubber and plastic piping industry.

PPR pipes and fittings are pipeline systems manufactured according to GB/T18742, with random copolymer polypropylene as the primary raw material. Polypropylene can be categorized into three types: PP-H (homopolymer polypropylene), PP-B (block copolymer polypropylene), and PP-R (random copolymer polypropylene). Due to its superior long-term resistance to hydrostatic pressure, long-term resistance to thermal and oxidative aging, and ease of processing and molding, PP-R has become the preferred material for producing polypropylene pipes designed to meet a 50-year service life for both cold and hot water applications.

PPR pipes and fittings are pipeline systems manufactured according to GB/T18742, with random copolymer polypropylene as the primary raw material. Polypropylene can be categorized into three types: PP-H (homopolymer polypropylene), PP-B (block copolymer polypropylene), and PP-R (random copolymer polypropylene). Due to its superior long-term resistance to hydrostatic pressure, long-term resistance to thermal and oxidative aging, and ease of processing and molding, PP-R has become the preferred material for producing polypropylene pipes designed to meet a 50-year service life for both cold and hot water applications.

Introduction to PE Pipe Products Polyethylene, abbreviated as PE in English, is a thermoplastic resin produced by the polymerization of ethylene monomers. PE pipes for gas applications represent a replacement for traditional steel and polyvinyl chloride (PVC) gas pipes. PE resin is synthesized through the polymerization of ethylene monomers. Due to variations in polymerization conditions—such as pressure and temperature—the density of PE resin differs, resulting in three main types: high-density polyethylene (HDPE), medium-density polyethylene (MDPE), and low-density polyethylene (LDPE). When processing different types of PE pipes, it is essential to select the appropriate resin grade based on the specific application requirements. Additionally, the requirements for extruders and molds vary accordingly. In the plastic pipe industry, PE pipes, PP-R pipes, and UPVC pipes all hold significant positions; among these, PE pipes enjoy a wide range of applications. Among them, PE water supply pipes and PE gas pipes are the two largest markets for PE pipes.