Industry Standards for PE Cross Pipes
PP-R管、UPVC管 都占有一席之地，其中 PE管强劲的发展势头最为令人瞩目。 At present, in China's municipal pipe market, plastic pipes are developing steadily. PE pipes , PP-R pipes, and UPVC pipes all have a place. Among them , the strong development of PE pipes is the most remarkable. PE pipes have a wide range of uses. ，是由单体乙烯聚合而成，由于在聚合时因压力、温度等聚合反应条件不同，可得出不同密度的树脂，因而又 高密度聚乙烯、中密度聚乙烯和低密度聚乙烯 之分。 PE resin is made by polymerizing ethylene monomer. Due to different polymerization conditions such as pressure and temperature during polymerization, resins with different densities can be obtained. Therefore, high density polyethylene, medium density polyethylene, and low density polyethylene are available. Points. 时，根据其应用条件的不同，选用树脂牌号的同，同时对挤出机 和模具的要求也有所不同。 When processing different types of PE pipes , the same resin grade is used according to different application conditions, and the requirements for the extruder and die are also different.
聚乙烯管 (polythylene pipe)的材料分为PE32、PE40、PE63、PE80、PE100五个等级 。 The material of polyethylene pipe (polythylene pipe) is divided into five grades: PE32, PE40, PE63, PE80, PE100 . 聚乙烯管材 专用料没有分级，这使得国内聚乙烯燃气管和给水管生产厂家选择原材料比较困难，也给聚乙烯管材的使用带来了不小的隐患。 China does not classify the special materials for polyethylene pipes , which makes it difficult for domestic manufacturers of polyethylene gas pipes and water supply pipes to choose raw materials, and it also brings a lot of hidden dangers to the use of polyethylene pipes. 断裂伸长率 （大于 350%），即强调基本韧性。 Therefore, the National Bureau of Standards has made a lot of revisions in the new GB / T13663-2000 standard, stipulating that different levels of PE80 and PE100 of water supply pipes correspond to different pressure strengths, and the tensile strength properties in the old standards are removed, and the fracture is increased. Elongation (greater than 350%), which emphasizes basic toughness.
执行标准： GB 15558.1-2003 . PE穿越管材 是传统的钢铁管材、聚氯乙烯燃气的换代产品。 PE crossing pipe execution standard: GB 15558.1-2003 . PE crossing pipe is a replacement product of traditional steel pipe and polyvinyl chloride gas. 必须承受一定的压力，通常要选用分子量大、机械性能较好的 PE树脂 ，如 HDPE树脂。 The PE crossing pipe must withstand a certain pressure. Usually, a PE resin with a large molecular weight and good mechanical properties , such as HDPE resin, is selected. However, due to its high sanitation index, LDPE, especially LLDPE resin, has become a common material for gas pipes. LDPE and LLDPE resins have low melt viscosity, good fluidity and easy processing, so the range of choice of their melt index is also wide, usually MI is between 0.3-3g / 10min. PE穿越管 ，不仅应具有良好的经济性，而且应具备接口稳定可靠、材料抗冲击、抗开裂、耐老化、耐腐蚀等一系列优点，来取代传统的卡扣方式橡胶软管，可以解决橡胶管易脱落、易老化、易虫咬、使用寿命短的缺陷。 A good PE crossing pipe should not only have good economy, but also have a series of advantages such as stable and reliable interface, material impact resistance, crack resistance, aging resistance, corrosion resistance, etc. to replace the traditional snap-on rubber hose , Can solve the rubber tube is easy to fall off, easy to age, easy to bite, short life.
PE穿越管行业规范尚在完善中，相信随着科技进步，PE穿越管行业也会发兴盛。 China's PE pipe industry standards are still being perfected. It is believed that with the advancement of science and technology, the PE pipe industry will also flourish.