1, steel frame plastic composite pipe: steel mesh welding and plastic extrusion synchronous, tube wall inside and outside plastic through the metal mesh hole in the middle of the tube wall, steel wire and plastic no obvious interface between the overall structure and reinforced concrete, the two materials are completely combined together, the quality of each part of the pipeline is the same and stable.
2, steel wire frame plastic (polyethylene) composite pipe: the inner plastic is extruded first, and then coated with a layer of hot melt adhesive on the outer wall of the inner plastic pipe, and then wrapped the steel wire, and then coated with a layer of hot melt adhesive. A multiple molding process for extruding plastic outer layers. There is a clear interface between the tube layers, easy to stratify. After stratification, the steel wire winding layer in the steel pipe is separated from the plastic layer, which will cause serious corrosion to the steel wire layer in the case of transporting corrosive medium. The main bearing body of steel pipe is destroyed, because the bearing capacity of the remaining plastic part of steel wire layer is very low, even under low pressure, it is possible to burst. Even if there is no corrosion problem, there is no steel wire reinforcement at the end of the pipe because the steel wire is not fixed (poor bonding) and will slip between the plastic layers under pressure. Into a pure plastic tube with a thin partial wall. The difference between steel wire mesh skeleton composite pipe and steel skeleton plastic composite pipe.
