The main component of PVC plastic pipe is polyvinyl chloride, which has strong corrosion resistance, easy adhesion, low price and hard texture. It is widely used in drainage, wastewater, chemicals, heating liquid and coolant, food, ultra-pure liquid, mud, gas. , compressed air and vacuum systems.
Hard PVC pipes and fittings are among the many PVC products, which are growing rapidly in China, and are also a large variety of consumption in various plastic pipes. China's PVC pipe has been developed and applied for more than ten years, especially the support of relevant national policies. PVC pipe production and application have made great progress. PVC pipe production has accounted for more than 50% of the total output of plastic pipe, and is widely used in industry and construction. , agriculture and many other industries.
In the production of general-purpose resin, the amount of ethylene consumed by PVC resin is low, and the cost of production is also low. The production of ethylene per ton of PVC in the sea requires 0.5314 tons of ethylene, while the average consumption of ethylene per ton of polyethylene is 1.042 tons. The ethylene consumption per ton of PVC resin in the sea is about 50% less than that of polyethylene. The raw material lv gas used for the production of PVC is an important way to balance the production of liquefied alkali to produce lv gas. Caustic soda is an indispensable raw material for the national economy. In addition, from the perspective of plastic products, PVC has good compatibility with various additives, and a large amount of low-cost filler can be added in the process of producing pipes, so that the production cost is greatly reduced.
PVC pipe is compared with metal pipe, producing PVC per cubic meter and producing steel and aluminum per cubic meter. The energy consumption of steel is 316KJ/m3, the energy consumption of aluminum is 619KJ/m3, and the energy consumption of PVC is 70KJ/m3. Steel consumes 4.5 times more energy than PVC and aluminum is 8.8 times more. The processing energy consumption of the PVC pipe is only one third of that of the same diameter metal pipe. At the same time, because the PVC pipe wall is smooth, no scale and erosion tumor, the water delivery efficiency is high, and the infusion can save about 20% of electricity.