The Product of plastic coated pipe (Steel-plastic multiunit tube) is newly developed independently by our company in the recent years. The product has strong maneuverability, and users can custom scientific and reasonable products as they please according to actual needs. The product of Steel-plastic multiunit tubes is a modularized system consisting of pipe fitting and connecting fitting, wherein, the parts of the connecting fitting are formed by high-quality steels through pressing (it can be divided into various colors). After the surface of the high-quality steel tube is disposed, the outer surface of the wire is integrated by special thermoplastic conglutinate plastic layer, and the inner surface is covered with anti-rust layer, then the wire is produced, which has lots of advantages, such as beautiful outline, abrasion resistant, bright color and luster, rust resistance and no pollution etc. The product has been popularized and trusted in many fields, such as electron industry, automobile, communication industry, toy industry and medicine industry etc.