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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.
Polyvinyl chloride (PVC, abbreviated as PVC in English) is a type of plastic pipe that was among the earliest plastic materials to be developed and put into practical use. It is produced by heating and extruding a mixture of polyvinyl chloride resin combined with auxiliary materials such as stabilizers, lubricants, and color concentrates. After years of accumulated experience in processing and application, PVC pipes now boast standardized production and processing techniques, as well as a comprehensive range of supporting components. Coupled with their economic, environmentally friendly, and cost-effective advantages, PVC pipes have become the dominant product in the rubber and plastic piping industry.
PE Gas Pipeline for Underground Installation 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’s 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 each hold a significant position; among these, PE pipes have an extremely broad range of applications. Among them, PE water supply pipes and PE gas pipes are the two largest markets for PE pipes.
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