Steel-plastic wound multiple pipe and manufacturing device and manufacturing technique of steel-plastic wound multiple pipe

Abstract

The invention discloses a steel-plastic wound multiple pipe, and a manufacturing device and a manufacturing technique of the steel-plastic wound multiple pipe. The steel-plastic wound multiple pipe comprises a steel-plastic wound multiple pipe substrate, wherein the steel-plastic wound multiple pipe substrate is wound by a steel-plastic band material and is welded through hot melting to form a spiral shape; vertical reinforcing ribs are arranged on the outer surface of the steel-plastic wound multiple pipe substrate. The steel-plastic wound multiple pipe is characterized in that spiral plastic filling materials, which are stuffed in a thermoplastic manner and formed through condensation, are arranged in the grooves between every two reinforcing ribs on the outer surface of the steel-plastic wound multiple pipe substrate. The invention further discloses the manufacturing device and the manufacturing technique of the pipe. The pipe has the advantages of high strength, easiness in manufacturing, and fold increase in bearing capacity of the pipe; meanwhile, the pipe is very low in transforming cost, has a relatively wide applicable scope, and can be widely applied to upgrade and transforming of various steel-plastic wound pipes.

Description

technical field [0001] The patent of the invention relates to a steel-plastic winding composite pipe and its manufacturing device and manufacturing process. It is a large-diameter steel-plastic composite pipe, and the pipe is mainly used in the field of liquid transportation. Background technique [0002] At present, polyethylene plastic pipes have been widely used in domestic water supply pipelines. The characteristics of this pipe are very prominent, with long service life and excellent corrosion resistance. In addition, no heavy metal salt stabilizers are added to polyethylene pipes during processing, and the material is non-toxic. In addition, it It will not promote the growth of algae, bacteria or fungi, which better solves the problem of secondary pollution of drinking water in cities and towns, and has good hygienic performance. Because it is an all-plastic pipe, when meeting the operating pressure and resisting external pressure (ring stiffness), the wall thickness o...

AI Technical Summary

Problems solved by technology

At present, the large-diameter drainage pipes on the market are almost all steel-plastic composite products. These steel-plastic composite drainage pipes are mostly non-pressure structure pipes, and they all have sufficient ring stiffness to support the external load of the soil and ensure long-term safe use. However, they cannot be used as Used in pipelines for conveying liquid under pressure

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