When people's living standards improve with the progress of society, people begin to pay more and more attention to their own quality of life, especially to the hygienic requirements of drinking water. Polypropylene pipe, as the fourth generation of new pipe after galvanized pipe, PVC pipe and alumi......

Single screw extruder is generally used in the production of polypropylene pipes. Due to the high quality requirements of polypropylene pipes, the outer diameter, wall thickness and other dimensions of pipes should be strictly controlled within the standard range, otherwise, the connection between p......

Due to the high brittleness, low melt strength and poor processing fluidity of UPVC materials, modifiers usually need to be added in the processing to improve the fluidity of UPVC, melt strength and material toughness. ACR or chlorinated polyethylene (CPE) and MBS are the modifiers of UPVC.

Defects in extruded products occur predominantly due to friction and non-homogeneous material flow. Further, temperature variations across the billet during hot extrusion can also lead to inhomogeneous deformation. Three types of defects are prominent in extrusion. They are: extrusion defect, surfac......

Due to the limitations of materials and structures, simple wall plastic pipes are mainly used in small-diameter pipes, while large-diameter pipes mainly use various structural wall plastic pipes, such as double wall corrugated pipe, clara winding pipe and hollow wall winding pipe. Among all kinds of......

The production process of large diameter HDPE winding pipe is unique and novel, which can meet the production needs of different products. It adopts a unique hot winding welding process, and can produce products with different inner diameters and different structural forms on the same production lin......