PVC single wall corrugated pipe production process edit this section will be a certain percentage of PVC additives and kneaded by adding the appropriate bellows device manufacturers generally use "Z" type kneader or high-speed kneader to mix evenly, through an extruder or twin screw powder molding. Number of revolutions of the machine using a single screw extruder is generally 30 ~ 60r / min, head pressure control about 36 ~ 54MPa. Plastics material to be full, free use of compressed air to blow bubbles. After stable extrusion molding apparatus and corrugated extrusion die insert both centerline ensure positive bellows equipment, extrusion die insert molding module should be greater than the distance between a pair of inner mold, to ensure that the upper and lower module fully closed after the molded article. The upper and lower mold ring groove sequence must be positive, it should not be misplaced. Traction speed control in general 6 ~ 10m / min or so. Inflation pressure in the annular groove blown products complete principle, which normally takes 0.15MPa. Mold temperature control in about 45 ~ 60 ℃ PP corrugated pipe equipment, to facilitate the development model before the products basic stereotypes, avoid corrugation pitch winding stretch. The extrusion temperature control of feed zone 145 ~ 160 ℃, the compression section 165 ~ 175 ℃, the metering section 175 ~ 185 ℃, the head 175 ℃ ~ 180 ℃, die 170 ~ 180 ℃. PVC single wall corrugated pipe main equipment and features of Edit this paragraph extruder generally equidistant ranging from deep, graded screw (see soft poly ethylene effective catch extruder). Corrugating device consists of mold, transmission and control system. Wherein the mold is composed of dozens of top and bottom off the continuous blow mold composed of upper and lower molds are fixed to the crawler belt drive in two. When the transmission is driven by rotation of the mold, the upper and lower molds repeated closing - opening operation. Constitute a closed mold cavity forming a circular tube, blow molded bellows after the mold is opened, make the products ejection. Corrugating apparatus products also play a role in shaping and traction. High-density polyethylene PE pipe life is more than four times the pipe. Installation of polyethylene PE pipes can be heated to melt welding PVC corrugated pipe equipment, so you can ensure the strength of the interface and to avoid leakage. High-density polyethylene PE pipes life can be up to five years. Flexibility, impact resistance: PE PE pipe good flexibility so that the pipeline can be easily placed along the trench terrain, easy to avoid obstacles during the laying and adaptation to soil marshes and soft soil subsidence area. Polyethylene PE pipes have a high impact resistance, and thus in the process of installation and transportation are not to be broken or damaged. UV: Polyethylene PE pipe materials in UV stabilized carbon black pigment, which can be placed outdoors or in long-term without worrying about changes pipeline performance for outdoor use. Double-wall corrugated pipe: cross-section of the double wall structure, its smooth inner walls and outer walls equidistant arrangement has a trapezoidal hollow pipe structure. Nominal diameter (DN): male pipe diameter, the inner diameter of the series and sub-OD Series categories performed simultaneously. Central to the bending stiffness: Pipeline measure resistance to deformation of the ring. Unit KN / m Features Unique structure, high strength, smooth wall, small friction, high turnover, do not do concrete foundation base, light weight, easy handling and installation, quick construction; rubber ring socket connection method is reliable and construction Easy quality assurance; flexible interface. Anti uneven settlement capability; good anti-leakage effect, can withstand a variety of aggressive chemical media; no scaling within the tube, the basic need clear, buried life of five years or more. PP corrugated pipe equipment, day Nobuyasu (certified), bellows equipment from Qingdao day letter Thai Plastic Machinery Co., Qingdao day letter Thai Plastic Machinery Co., Ltd. (www.qdtianxintai.com) (www.txt-extruder.com) is the leader in Qingdao, granulating machine, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. Nobuyasu leadership in the days of the staff warmly welcome all inquiries negotiations to create the day Nobuyasu better future.