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塑料管作为一种优良的非金属管材,自卅年代在德国研制成功以来,已有很大的发展,在欧州等发达国家,塑料管的生产技术和应用都相当成熟,美国1983年塑料管的消耗量已达到161万吨,占建筑塑料消耗量的42.6％。目前塑料管品种有聚氯乙烯、氯化聚乙烯、聚乙烯、聚丙烯和聚丁烯等。我国塑料管发展较晚,生产聚氯乙烯管的主要设备挤出机,80年代初期多数使用单螺杆杆挤出机,而双螺杆挤出机生产尚未定型,国外单螺杆挤出机已濒临淘汰,因而在生产技术
As an excellent non-metallic pipe, plastic pipe has developed greatly since its successful development in Germany. In Europe and other developed countries, the production technology and application of plastic pipes are quite mature. The plastic pipe in the United States in 1983 Consumption has reached 1.61 million tons, accounting for 42.6% of the construction plastics consumption. At present, there are PVC, chlorinated polyethylene, polyethylene, polypropylene and polybutylene. The development of plastic pipes in China was relatively late. The main equipment extruders for producing PVC pipes were mostly single-screw extruders in the early 1980s. However, the production of twin-screw extruders has not yet been finalized, and foreign single screw extruders are already on the verge of elimination. , thus in production technology