Double-layer steel-strip-reinforced plastic spiral tube

Abstract

The invention discloses a double-layer steel-strip-reinforced plastic spiral tube, which belongs to the field of steel plastic tubes, and is characterized in that: a steel skeleton is used for support; the step steel skeleton is formed by using polyvinyl resin and a cold-formed steel strip, which is deoiled and derusted and coated with adhesive resin, and by rolling in a cold formed profile steel machine; the steel skeleton and the polyvinyl resin are adhered together in a plastic extruder to form a steel plastic tube profile; and finally, the double-layer steel-strip-reinforced plastic spiral tube is manufactured by a spiral winding forming machine and a plastic-resin melting mode.

Description

Technical field: [0001] The invention belongs to the field of metal-reinforced plastic pipes, in particular to a multi-purpose double-layer steel-belt-reinforced plastic spiral pipe used in urban and rural water supply and drainage projects, heat supply, gas engineering, and coal mine underground water supply and drainage. Background technique: [0002] At present, plastic products are developing rapidly all over the world. It is a development trend to replace steel and wood with plastic, especially the development of plastic pipes is particularly rapid. It is constantly replacing various metal pipes and other materials in various fields. Pipes made of traditional materials and plastic pipes are widely used in engineering. There are many types, varieties and models. Users can choose various plastic pipes according to the needs of the project. At present, plastic pipes at home and abroad are still dominated by polyvinyl chloride and polyethylene pipes, although plastic pipes ...

AI Technical Summary

Problems solved by technology

However, I have found through long-term observation and investigation that there are two obvious shortcomings in the production of pure plastic pipes: first, if you want to produce large-diameter or high-pressure pipes, the thickness of the plastic pipe wall must be increased. It not only wastes precious plastic raw materials, but also increases the product cost; secondly, if the current traditional extrusion method is used to produce large-caliber plastic pipes, the machinery and equipment are very complicated and expensive, and such machinery and equipment generally cost several million yuan. Even tens of millions of yuan will increase investment costs and manufacturing costs

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