一、概述化学建材(系指合成有机高分子建筑材料)是新型建筑材料不可缺少的重要组成部分。建筑用PVC塑料管道是化学建材中产量较大的产品之一。塑料管道质轻、美观、不生锈、不结垢、不结露、流体阻力小、施工快、使用寿命长,代替传统的白铁和铸铁管可以节省建筑的投资和节约能源,因而塑 I. Overview Chemical building materials (referring to synthetic organic polymer building materials) are an indispensable part of new building materials. PVC plastic pipe for construction is one of the products with large output in chemical building materials. Plastic pipes are light, beautiful, non-rusting, non-fouling, non-condensing, low fluid resistance, quick construction, and long service life. Instead of traditional white iron and cast iron pipes, construction investment and energy saving can be saved, and thus plastic.