Since the 1990s, our synthetic resin industry booming, production and consumption has maintained a good momentum of growth. Even after the United States, Japan, Germany, South Korea, ranking fifth in the world. However, a variety of plastic pipe required special resin there is a big gap, hdpe pipe, although in our PE and PP resin production is large, but suitable for small pipe resin, especially suitable for urban water supply, city gas PE pipe conveying Compound and construction of hot and cold water PP-R Compound less need to import a certain quantity of plastic pipe special resin. Crack growth fracture toughness (4) Polyethylene has good rapid crack growth fracture toughness, crack growth occurs rapidly destroyed, the crack can be 100 ~ 45m / s speed of the rapid expansion of several hundred meters to ten kilometers, pe20 water supply, causing long distance pipe road damage, large-scale spills, explosions and subsequent combustion (transport natural gas) or flood (water) accident. This accident is not the probability, in the event lethal. The continued development of plastic pressure pipes is concerned, the importance of preventing damage to rapid crack growth has exceeded the required strength properties for long-term life requirement. The reason for this: In the same SDR (pipe diameter to its thickness ratio), the calculation of long life - nothing to do long-term strength and increased diameter (actually large diameter pipe likely than small-diameter tube safety), but with the risk of rapid crack growth diameter increases. In the existing large variety of plastic tube in experimental methods such as polyethylene, polypropylene, PVC pipes, etc., up to a certain diameter, the promise made to prevent rapid crack growth damage determined pressure, is always better than the long-term strength Xu decided at a low pressure. That is to say, according to prevent rapid crack growth damage requirements determine the allowable pressure, long life (such as 20 ℃, 50 years) requirements can be met on their own; rapid crack growth fracture toughness of a material difference will be eliminated, whether it Good or bad long-term strength properties. Such as polyvinyl chloride (PVC-U) substantially all of the gas pipe has been replaced by polyethylene (PE) gas pipe. European polyvinyl chloride (PVC-U) for water is polyethylene (PE) pipes to replace the trend has been clear. 3, adhesive coating suggested the use of my company's PVC special adhesive, with the adhesive distribution with a small brush dipped in adhesive, brush the joints of pipe and pipe fittings, pe100 pipe, should the axial brushing action quickly spread evenly, water pipe, and brushing adhesive moderation, not leak too thick coating or painting. Winter construction particular attention, should be applied after coating jack socket. pe20 water supply, water supply, two-out plastic (View) by Xiong Zan Pair bright plastic products factory. Xiong Zan Pair Ming plastics factory (1620231.707070.cn) is a professional "pvc drainage pipe, pvc pipe, electric power pipe, glass pipe, steel pipe," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "two-out" brand has a good reputation. We adhere to the "service first, customer first" principle, so that two-out plastic congregation has won the trust of customers in UPVC pipe, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!