一、前言近年来,由于高分子化合物的迅速发展,为钢铁工业深加工钢质产品提供了耐蚀性能优良的原材料。继彩色涂层钢板之后,有机涂层钢管也在六十年代后期被开发出来。聚乙烯涂料除化学性能稳定外,还具有吸水率低、氧渗透率小和高电阻的特点,所以在户外施工弯曲处,也不致于损伤涂膜,因此,聚乙烯涂层钢管作为防蚀保护管颇受用户欢迎。 I. Introduction In recent years, due to the rapid development of polymer compounds, it has provided raw materials with excellent corrosion resistance for deep processing of steel products in the iron and steel industry. Following color-coated steel, organic-coated tubes were also developed in the late 1960s. In addition to the chemical stability of polyethylene coating, but also has a low water absorption, low oxygen permeability and high resistance characteristics, so bending in the outdoor construction, it will not damage the coating, therefore, polyethylene coated steel pipe as a corrosion protection The tube is popular with users.