Raw material production process + additive preparation → conveying mixed feeding → forced feeding → conical twin-screw extruder → extrusion die head → grading and shaping → spraying vacuum shaping box → immersion cooling water tank → ink printing machine → crawler tractor → knife cutting machine → pipe stacking rack → finished product inspection and packaging
Plastic pipe product introduction my country's PVC pipes have developed rapidly in recent years, with an average annual growth of 8%, while demand has increased by 2% annually. Among plastic pipes, PVC pipes have always been in a leading position in use and are widely used in water supply and drainage pipes. Due to the relatively mature technology, PVC water supply pipes have invested less in product innovation in recent years, and new products are relatively few. There are many ordinary products on the market, and there are few high-tech and high-value-added products. Similar general products and low-end products account for the majority, and there are fewer mid-to-high-end products.
At present, the domestic plastic pipe production capacity is 3 million tons, mainly PVC, PE, and PP-R pipes. Among them, PVC pipes occupy a large market share in plastic pipes, accounting for nearly 70% of the plastic pipe market share. 1,600 PVC pipe production lines. The annual production capacity exceeds 2.5 million tons. In 2003, the annual output of PVC pipes (pipe fittings) reached more than 1.2 million tons. Among plastic pipes, PVC accounts for 70%, PE accounts for 25%, PP-R accounts for 4%, and others account for 1%.