在给排水基本建设中,管道的投资约占60%以上。因此,探索和研制高强度、耐腐蚀、价格低的新型管道一直是摆在给排水工作者面前的一项艰巨而急迫的任务。除了灰铸铁管、钢管、水泥管和钢筋混凝土管等目前在我国经常采用的管材外,世界各国已经研制和发展了各种新型管材。其中常用的有球墨铸铁管、聚氯乙烯管、聚氯乙烯玻璃钢复合管和增强玻璃纤维管。 In the basic construction of water supply and drainage, the pipeline investment accounts for more than 60%. Therefore, exploring and developing new types of high-strength, corrosion-resistant, and low-cost pipelines has always been a difficult and urgent task for water supply and drainage workers. In addition to the commonly used pipe materials currently used in China, such as gray cast iron pipes, steel pipes, cement pipes, and reinforced concrete pipes, various countries have developed and developed various new pipe materials. Commonly used are ductile iron pipes, polyvinyl chloride pipes, polyvinyl chloride fiberglass composite pipes and reinforced glass fiber pipes.