echnical characteristics and application scope of hollow wall winding pipe


Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.


1. Pipe characteristics

The hollow wall winding pipe uses polyethylene as the raw material, which is a product advocated by the state to replace steel with plastic. The pipe is of hollow wall structure and fused into one, so that it has good impact resistance and pressure resistance. The hollow wall winding pipe has the following excellent characteristics:

· Chemical resistance: not corroded by sewage, waste water and chemicals, and not corroded by rotten substances in the soil.

· Impact resistance: the pipe wall is of "I" structure, with impact resistance and high rigidity; it is a flexible pipe with good extensibility.

· Aging resistance: the pipe is made of black anti UV formula, with excellent aging resistance.

· Light weight: due to the hollow structure of the pipe, raw materials are saved on the premise of maintaining rigidity. Under the same diameter, the weight per unit length is 1/8 of the weight of the cement pipe. The construction is convenient, and large installation equipment is not required, which reduces the labor intensity and shortens the construction period.

· Good drainage performance: the inner wall of the pipe is smooth, the hydrodynamic friction is small, and the flow rate is fast. The hollow wall winding pipe is selected, and its pipe diameter can be 1-2 pipe grades smaller than that of the selected reinforcement

· Economic performance: the price of pipe materials is low, and the construction, management and maintenance costs are low.

· Material connection: usually use "electric heating melting belt" or "heat shrinking belt" connection technology. The pipes and fittings are fused into one, which not only ensures the strength of the connection, but also realizes zero leakage of the pipeline system. The "heat shrinkable belt" connection technology is adopted in this project.


2. Scope of application

The hollow wall winding pipe can be widely used in municipal sewage, expressway, rainwater drainage, farmland irrigation, and can also be used as a buried cable sleeve. The pipes are easy to transport, load and unload, simple and convenient to construct, and have good sealing performance. They are ideal substitutes for cement pipes, cast iron pipes, and glass steel pipes.


If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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