A greatly shorten the construction period and reduce the difficulty of construction: Because HDPE double wall corrugated pipe quality is far lighter than cement pipe, very easy socket, so greatly reduces the difficulty of construction; and HDPE double wall corrugated pipe a minimum of 6 meters, and cement tube is 2.5 meters a greatly shorten the construction period. Two, HDPE double wall corrugated pipe for less demanding because of the ditch cement pipe for steel pipe socket in order to ensure effectiveness, the ditch must deal with flat, preferably laying the foundation layer, and require construction workers have absolute responsibility. HDPE double wall corrugated pipe is a flexible tube, do not ask for the ditch. HDPE tube elongation of steel more than 20 times, six times that of PVC half, its very high elongation at break, elongation strong. This means that under the ground is sinking or when there are changes in the earth's crust onset earthquake situation, HDPE pipe can become resistant to deformation without fracture. This is far better than steel, but also better than the obvious fragility of PVC pipe. This performance has been demonstrated at home and abroad (Japan's Kobe earthquake did not cause pipe rupture; HDPE pipe in support of South Baoshan earthquake damage are not proof). Large diameter HDPE corrugated pipe molding process an advanced device configuration with international standards and in full compliance with European technical and safety standards, especially online double wall socket belling production technology in the world to obtain a patent. 2, molding a double-wall corrugated pipe, corrugated pipe machine: double-wall corrugated pipe forming the key lies in the corrugated pipe forming machine, including corrugated molding module, flaring molding module, extrusion die and vacuum cooling water jacket system of four parts. Because of the important indicators of double-wall corrugated pipe is ring stiffness, so to manufacture products of high ring stiffness double-wall corrugated pipe production line equipment, there must be a reasonable advanced peak shape. Practice has proved, to the manufacture of high ring stiffness of double-wall corrugated pipe, must have both wide and tall the sinusoidal shape of ripples, like arched bridges can withstand greater loads the same. c, flaring forming a double wall socket flared shape is double-wall corrugated pipe production technology to control critical importance, as is the use of HDPE double wall corrugated pipe production line flaring technology and PVC pipe flaring forming a completely different , PVC pipe flaring two-step double-wall corrugated plastic pipe production line, that first made sure the size of the pipe diameter, still with another special belling machine, the flared portion of the pre-heated and then using compressed air Inflation cooling stereotypes made flaring. The flaring HDPE double wall corrugated pipe is a complete production line, so called online flaring, so its difficult flaring hdpe double wall corrugated pipe production line, high technology content. When the inner wall of the pipe wall corrugated pipe during flaring, first turn off the water jacket vacuum, and then release the gas mezzanine, mezzanine within the requirements of all the gas drained, then open the air valve, so that the module flare quickly inflated, while pipe wall flared portion module vacuum double wall corrugated pipe production line, the vacuum requirements greater than 0.08MPa, then ask to control the speed and flaring flaring air pressure, so as to ensure a double wall socket flared shape intact. hdpe double wall corrugated pipe production line | with three (certified) | double-wall corrugated pipe production line is provided by the same three-Plastic Machinery Co., Ltd. Qingdao. Plastic Machinery Co., Ltd. Qingdao with three (www.tongsansuji.com) is Qingdao, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the same three presses leadership with the staff warmly welcome all inquiries to discuss, with three presses to create a better future.