For the general plastic wall winding pipe for direct buried drainage pipes, its larger ring stiffness is difficult to exceed SN8, but the newly constructed pipe is very easy to achieve SN8, SN12.5 and SN16, or even better. At the same time, the anti-corrosion characteristics of this kind of steel-plastic composite pipe with steel pipe as the inner layer and polyethylene plastic as the inner surface layer are also very good. As a result, these composite corrosion-resistant pipes can be used in a variety of harsh environments. For example, in some coastal cities, due to the corrosive components in the soil layer, if the service life of concrete pipes is very short, it is expected that corrosion-resistant plastic direct buried drainage pipes can be used. However, in the past, because the goods without high ring stiffness could not meet the requirements of the design scheme, now the metal lifting winding structure wall pipe can be selected, Fujian pipe manufacturers.

In addition to this improvement in characteristics, another obvious advantage is the saving of raw material production costs. Compared with other plastic pipes with the same outer diameter and ring stiffness, the steel belt lifted polyethylene (PE) spiral corrugated pipe can save most of the raw material consumption, Fujian pipe manufacturers.

Polyethylene accounts for only 2/3 of the overall net weight of composite pipes, which is a good solution to reduce the production cost of raw materials in the situation of continuous increase in plastic prices. The ring stiffness achieved by pressing the steel strip pipe into steel ribs far exceeds the actual effect of the very strong polyethylene structural layer. With a moderate design scheme, the thickness and aspect ratio of the steel rib can achieve the specified ring stiffness casually. The function of polyethylene in the metal lifting winding structure wall pipe is corrosion resistance and wear resistance, so the steel rib material is very little in the metal lifting winding structure wall pipe, and the material of polyethylene does not need more, Fujian pipe manufacturers.