The parameters of the vacuum setting box state that in order to prevent the pipe from cooling and setting from not being fully cooled and deformation, the waste heat from the pipe wall must be removed. A cooling device designed to reach or approach room temperature. The main body of the cooling tank is made of imported SUS304 stainless steel. 2, the main setting part adopts brass, steel or aluminum and other materials and chromium plating, in order to reduce the friction between the pipe and the wall of the fixed diameter body and prevent wear. 3, the vacuum suction adopts high precision water ring vacuum pump, which has the advantages of low noise and stable vacuum. 4, the vacuum suction channel is set in the form of slit and hole, and the shaped suite can be adjusted alone. 5, the cooling is realized by water bath or spray, the heat transfer value of the product is high and the cooling is uniform. 6. the vacuum box of short fixed diameter block makes the empty chamber pipe with cross section shape formed accurately. 7, the sink frame adopts three dimensional electric adjustment function, which makes the operation in the production process simple and convenient. 315-630mm HDPE pipe vacuum diameter box is one of the necessary equipment in the production process of HDPE plastic pipe. It is mainly used for vacuum sizing and spray cooling of plastic pipe after extrusion from die. The equipment can make use of plastic products in a certain vacuum degree, can be close to the positive circle to a large extent, and pump spray cooling, to achieve the effect of qualified products. 315-630mm HDPE pipe vacuum setting box uses vacuum pump to provide vacuum degree, and the pump realizes vacuum diameter setting and cooling of pipe through spray nozzle. The vacuum diameter box of 315-630mm HDPE pipe is made of SS304 stainless steel, the box is designed by pressure resistance, and the internal structure design is strengthened, which greatly improves the firmness of the vacuum box. At the same time, a vacuum pressure gauge is arranged at the top of the box body, which can facilitate the operator to know the vacuum degree and operation of the equipment accurately, and avoid the collapse of the box body caused by the high vacuum of the equipment in the production process. At the same time, it can also prevent the pipe from being damaged because of the excessive vacuum. At the same time, the vacuum diameter setting box is equipped with double control of water temperature and water level to prevent excessive spray cooling water and spray water into the vacuum pump, which leads to the damage of the vacuum pump. The side of the box has plexiglass window at the same time, which can make the operator produce the pipe at any time. The spray cooling adopts four-dimensional spray cooling and the spray nozzle made of ABS material is designed, which has the characteristics of good spray cooling effect and long service life. The vacuum diameter box adopts water ring vacuum pump and centrifugal pump, which has the characteristics of high efficiency, low energy consumption and convenient maintenance. Stainless steel flanges of corresponding specifications are installed at both ends of the vacuum box, which greatly improves the sealing of the vacuum box. Pre-sale services: provide free advice, technical support, liaison and other demand services. In-sale service: can provide delivery, installation, debugging, operator training and other services. After-sales service: the whole machine is guaranteed for one year and maintained for life. Commissioning and installation: after mechanical confirmation of receipt, the buyer prepares to complete the required items and notifies us that we will arrange personnel to the location of the machine within 48 hours; If the transportation is inconvenient or the road is long, the personnel of our factory will be arranged to arrive and install and debug within 72 hours. Operation training: when debugging personnel install and debug training at home, the demand side should arrange one or more designated personnel to carry on the study training until the operator can operate independently. Customers need to know that all models are non-standard products, so the price is mainly negotiated