The material is 40Cr. The abrasive has high hardness, strong rigidity, strong abrasion resistance, and is not easy to deform under high temperature pressure. The spiral flow channel adopts multi-layer spiral shunt, polished and chrome-plated. The flow channel is smooth and smooth, and the resistance is small. The clockwise rotation direction is exactly opposite to the rotation direction of the screw, which can relieve the stress formed during the extrusion process of the released material, improve the strength of the pipe, and greatly reduce the phenomenon of pipe burst. The 45 ° angle extrusion design is used for the expansion die and die contraction to ensure that the material has good fluidity and axial stretching during the molding process.