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化学建材由于具有节材节能、保护生态、改善居住环境、提高建筑功能与质量、降低建筑自重，便捷施工等优点，国家正在大力推广。其中ＰＶＣ塑料建材是最主要的化学建材，市场前景十分看好。 １ 塑料管以ＵＰＶＣ管为主。根据规划，到２０００年，全国新建住宅的室内塑料排水管
Due to the advantages of energy-saving materials, ecological protection, improvement of living environment, improvement of building function and quality, reduction of construction weight and convenient construction, the chemical building materials are being vigorously promoted. One PVC plastic building materials is the most important chemical building materials, the market prospects are very good. A plastic pipe to UPVC-based. According to the plan, by 2000, the country’s new plastic dwelling house indoor