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Exploring the space for plastic spiral pipe technology upgrade

Exploring the space for plastic spiral pipe technology upgrade

The plastic winding pipe in the drainage pipe network has developed by leaps and bounds since it was introduced into China in the late 1990s. It has been playing a leading role in the drainage system. Currently, there are more than 3,000 production lines in operation in thousands of domestic enterprises. -The specifications within the range of 3000mm can be satisfied. Some companies have developed a pipe diameter of about 4000mm, which makes the plastic winding pipe market stable and sustainable. There is huge room for development. Plastic winding pipes are divided into two categories at present due to different winding processes: hollow wall winding pipe series and carat winding pipe series. Let's share with you the exploration of the technical upgrade space of the hollow wall winding tube series products!
The earliest products of plastic spiral tubes are hollow-wall spiral tubes, ie double flat-wall hollow spiral tubes. This product has a wide range of forming diameters, ring stiffness can be achieved at multiple levels, strong pressure bearing capacity, outstanding acid and alkali resistance, and long life. , Winding and deformation resistance are very good indicators. It is a new product in the municipal government's drainage pipe network engineering, sewage, and interception pipe network. It has super explosive power and extremely extensive promotion efforts. The Ministry of Construction of the People's Republic of China has held nationwide promotion three times, and all provinces and cities have carried out corresponding promotion and implementation, making the product unprecedented in popularity and development. Under the impetus of this good form, the winding tube has extended and upgraded the product structure, process, specifications and other aspects. For example, on the basis of the hollow wall winding pipe forming production line, we have developed a number of extension products such as winding bellows technology, structural wall winding pipe technology, plastic steel winding pipe technology, winding internal ribbed pipe technology, and vertical ribbed steel belt winding pipe technology.
The connection of many winding tube products is very similar, basically they are electrothermal fusion tape connection and heat shrinkable tape connection. Both of these connection methods require the builder to go to the construction site to perform the operation and construction connection. The electrothermal fusion belt needs to be equipped with hot melt welding machine, pipeline cobalt and other construction tools. The heat shrinkable belt requires construction tools such as a liquefied gas tank and a flame spray gun. Both of these connection methods have certain defects and shortcomings, and they cannot be connected as fast as sockets such as expanded PVC pipes and double-wall corrugated pipes. Therefore, there is room for further improvement in the production process and technology of the winding tube. The author will explore and share the upgrade space of the hollow wall plastic winding tube technology in this field.
Exploring one. The use of hollow-wall winding pipe is the characteristic of double flat-wall winding structure. Make an article on pipe cutting, use online cutting of the pipe wall, mill the thickness of the inner diameter of one end of the pipe by half, and the other end of the pipe. The outer diameter is washed by half the thickness, so that the two pipes connect the positive and negative threads formed by washing after external milling and internal milling to complete the pipe thread connection. This connection method is more suitable for the products of the small caliber series. It is recommended that the products with the pipe diameter of 1200mm be more suitable. Large-diameter pipeline thread processing and on-site connection have certain difficulties, it is recommended not to adopt this method.
Exploring two. Using the principle of extrusion injection pipe fittings, two sets of socket pipe fitting injection equipments are added at the rear end of the winding pipe production line. It is equipped with matching pipe fitting molds for making sockets and sockets. Both ends are cast together to complete the production of sockets online. This connection method improves the efficiency and connection quality of pipe construction operations.

Exploring 3. On the forming machine of the winding pipe production line, according to the actual length of the product, place the pre-designed socket shape gasket at a fixed point, and wind to form the socket at a specific position; before cutting, add a set sealing ring The groove milling equipment is used to complete the online production of the winding tube with socket, but this method is more complicated to operate. The world is not moving forward, and technology needs to be improved and improved. The upgrade space of the plastic spiral pipe technology still needs to be developed and improved, and it is expected that this technology will mature and be widely used in the near future.

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