Production and process control Qingdao Plastic Machinery Co., Ltd., with three double-wall corrugated pipe production equipment has been well received within the industry who are a high-density polyethylene (HDPE) double-wall corrugated pipe At present, China has urban sewage treatment and rainwater collection when key strategic issue for national economic development task, and therefore the development and use of large-diameter HDPE double wall corrugated pipe wall socket has been placed in municipal construction projects on the agenda, ring stiffness, high impact strength, transportation and installation is not the birth of the new sewer damage, long life, no leakage sealing connection, project total cost is not higher than the cement pipe has become the next generation of municipal drainage Sewer construction and promotion of the use of focus. Since polyethylene pipe has good physical and mechanical properties and safe and reliable health performance, its main feature is light weight, high strength, easy to acid corrosion, compression, construction, material saving, life of up to 50 years, etc. , is a green high-tech products. Especially the double wall socket wall corrugated high density polyethylene pipe, due to the joint connecting solid, stable and reliable quality, easy construction of large diameter high-density polyethylene and therefore double corrugated pipes of municipal pipeline project is planning to promote the development of major new reconstruction applications products. HDPE double wall corrugated pipe is mainly used in urban and stormwater outfall pipe, due to the transportation of sewage and stormwater drains by gravity, so no pressure in their usual double-wall corrugated pipe production line pipe, also known as non-pressure pipes buried. Because most of the drainage pipe buried in the ground, it must bear some external pressure, so buried pipes must also have a certain rigidity and strength to withstand external pressures, underground pipes suffered external pressure can be divided into static load and load Two load dynamic and static load from the soil weight plastic double-wall corrugated pipe production line pipe above the dynamic load from the road above the previous heavy-duty vehicles. Buried pipes suffered external pressure load and buried depth is closely related to the deeper underground pipeline suffered the greater static load, and suffered fewer moving load. National Association of polyethylene corrugated pipe covered in depth of more than 2.4 meters deep underground, you can ignore the dynamic load. Widely used double-wall corrugated pipe with three Plastic Machinery Co., Ltd. Qingdao double wall corrugated pipe features double-wall corrugated pipe cement pipe equipment throughout the country have led to ground subsidence due to water leakage, the interface fracture, will have to be replaced within a few years cases. Six, double-wall corrugated HDPE pipe inside surface is smooth, with no sign of nuclear power, not scaling cement pipes easy to scale, after scaling, so that the diameter narrowing, affecting through traffic. Seven, HDPE double wall corrugated pipe quality light, easy to transport and install, without loss of quality cement pipe weight, not easy to transport and install, and easy to wear and tear during transportation and installation. Eight, when the flow through the pipe, slope and depth are the same, HDPE pipe can be smaller than the two models within the cement wall corrugated HDPE pipe surface roughness coefficient of 0.009, the surface roughness coefficient of 0.014 hdpe pipe cement wall corrugated pipe production line, Xie recognized in accordance with the laws of the world, the spiral flow calculations performed with double-wall corrugated pipe production line, HDPE pipe cement pipe can be smaller than the two models, and practical application, the proposed model can be a small one. Designed as a 600-diameter concrete pipes can be replaced with a 500 caliber HDPE. The inner wall of PVC-U double-wall corrugated PVC pipe is the main raw material processing and production of smooth, corrugated outer wall, the inner and outer walls of the hollow of a special pipe. The pipe looks, compression and strong, water resistance is small, acid corrosion. Easy installation and transportation, energy saving, water saving significant advantages of saving materials. hdpe double wall corrugated pipe production line, double-wall corrugated pipe production line, with three presses supplied by the same three-Plastic Machinery Co., Ltd. Qingdao. Plastic Machinery Co., Ltd. Qingdao with three (www.tongsansuji.com) strong, credible, Qingdao, Shandong Province in other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you to join with three presses and into the brilliant, for a better future!