Steel plastic composite pipe for greenhouse framework and production method thereof

Abstract

The invention discloses a steel plastic composite pipe for a greenhouse framework and a production method thereof. The steel plastic composite pipe comprises an outer-layer plastic pipe, an intermediate-layer steel pipe and an inner-layer plastic pipe which are sequentially sleeved together from outside to inside; a supporting device for an inner pipe and an outer pipe is arranged on the intermediate-layer steel pipe, wherein the outer end part of the supporting device is supported against the inner wall of the outer-layer plastic pipe; the inner end part of the supporting device is supported against the outer wall of the inner-layer plastic pipe; filler for fastening the outer-layer plastic pipe, the intermediate-layer steel pipe and the inner-layer plastic pipe together is filled between the outer-layer plastic pipe and the inner-layer plastic pipe; the inner pipe and the outer pipe are plastic pipes; filler is poured between the inner pipe and the outer pipe and is used for fastening the inner pipe, an intermediate pipe and the outer pipe together; the relative position relation among the inner pipe, the intermediate pipe and the outer pipe is ensured by using the supporting device between the inner pipe and the outer pipe; the steel pipe is positioned between the inner pipe and the outer pipe and is free from contact with air, thus the steel pipe can be prevented from being corroded by acid and alkali; in addition, the rigidity of the composite pipe can be ensured by using the steel pipe; and the composite pipe has the advantages of strong corrosion resistance, high rigidity and long service life.

Description

technical field [0001] The invention relates to a steel-plastic composite pipe, and also relates to a production method of the steel-plastic composite pipe. Background technique [0002] Initially, traditional bamboo poles and wooden poles were generally used as the framework of vegetable greenhouses and breeding greenhouses, but bamboo poles and wooden poles have low strength, poor corrosion resistance, short service life, and high maintenance costs; with the development and promotion of greenhouse technology, they are gradually used Steel pipes and PVC pipes replaced bamboo poles and wooden poles, but some old problems already existed, and some new problems came along with them. Steel pipes have poor corrosion resistance and high prices; PVC pipes have low rigidity and strength; and later, inorganic glass steel pipes and other materials were used to make greenhouses Skeleton, but there are still problems such as high price and inconvenient installation of inorganic glass f...

AI Technical Summary

Problems solved by technology

[0002]In the beginning, traditional bamboo poles and wooden poles were generally used as the framework of vegetable greenhouses and breeding greenhouses. However, bamboo poles and wooden poles have low strength, poor corrosion resistance, and short service life. High maintenance costs; with the development and promotion of greenhouse technology, steel pipes and PVC pipes are gradually used to replace bamboo poles and wooden poles, but some old problems already exist, and some new problems have also emerged. Steel pipes have poor corrosion resistance and high prices; PVC pipes The rigidity and strength are low; then inorganic glass steel pipes and other materials were used to make the greenhouse skeleton, but inorganic glass steel still has problems such as high price and inconvenient installation

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