Steel plastic composite straight pipe is a new corrosion pipe, using advanced thermal rotational molding process, blend steel and plactic, pipe fittings including elbow, tee, Stone and Sizes etc. all use the whole steel shell, lined with plastic overall pressure injection molding. Steel plastic composite pipe Features: 1, Good resistance to corrosion: Inner plastic layer of coating plastic steel pipe for water supply and drainage has strong adhesion, high density and good resistance to corrosion, which can effectively extend the life of the pipeline. 2, Good mechanical strength: coating plastic steel pipe for water supply and drainage has the same advantages of mechanical strength with hot-dip galvanized steel pipe, with a strong endurance.