Steel frame - plastic complex pipe and its application in water supply and drainage of metallurgic enterprises 钢骨架塑料复合管及其在冶金企业给排水中的应用
4.
Technical specification for extra - thin - wall stainless steel and plastic composite pipeline engineering of building water supply 建筑给水超薄壁不锈钢塑料复合管管道工程技术规程