The production process of PE steel wire mesh skeleton composite pipe is as follows: extrude the inner plastic first, and then apply a layer of PE adhesive resin on the outer wall of the formed inner plastic pipe, which is called hot melt adhesive for short in the industry. Then conduct steel wire weaving and winding to ensure that the network structure of steel wire winding is uniform and regular, then apply a layer of hot melt adhesive, and finally extrude the outer plastic for multiple molding.
This process is called multi-layer rigid co extrusion technology in our industry. In order to prevent the obvious interface between layers of steel plastic pipes, which is easy to delaminate, the steel wire winding layer inside the pipe after delamination is partially separated from the plastic layer, which will cause serious corrosion to the steel wire layer and damage the pressure bearing main body of the pipe when transporting corrosive media, Because the pressure bearing capacity of the residual plastic part of the corroded steel wire layer is very low, pipe bursting may occur even under low pressure.
Even if there is no corrosion problem, the multi-layer coextrusion technology uniquely developed by Xi'an Shenghuang Pipe Industry Co., Ltd. has played a very effective solution. Pure imported adhesive resin is used to make the adhesive resin, pe100 polyethylene resin and steel wire fully integrated under the temperature of more than 180 ℃. Polyethylene sealing shall be carried out at the unfixed end of the steel wire at the pipe end. Ensure that the steel wire will not slide between the plastic layers under the effect of pressure, resulting in no steel wire reinforcement at the pipe end, so as to truly achieve the plastic steel composite effect
