Reinforced plastics spiral tubular product of composite steel strip

Abstract

The invention discloses a reinforced plastics spiral tubular product of a composite steel strip, belonging to the field of steel and plastic tubular products. The reinforced plastics spiral tubular product is characterized in that a composite steel frame is used as a support, polyvinyl resin and a cold rolled steel strip which is subjected to oil and rust removal and is coated with adhesive resin are rolled into the steel frame with an approximate stair step shape through a cold forming sectional steel mill, and the steel frame is compounded and adhered with polyethylene to be made into a sectional bar for a steel and plastic structure pipe through a plastic extruder; and the reinforced plastics spiral tubular product of the composite steel strip is produced through helical winding and forming machine equipment by adopting 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-layer steel-belt-reinforced plastic spiral pipe used in urban and rural water supply and drainage projects, heat supply, gas engineering, coal mine underground water supply and drainage, and the like. 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 are r...

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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