Plastic-lined steel plastic composite tube and manufacturing method thereof

A steel-plastic composite pipe, a technology for manufacturing method, applied in the direction of pipe, rigid pipe, pipe/pipe joint/pipe fitting, etc., can solve the problems of poor anti-aging ability of outer layer and poor anti-rust ability of inner layer, etc., and save heating cost , the effect of reducing the risk of stratification

Inactive Publication Date: 2011-04-20
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a plastic-lined steel-plastic composite pipe to solve the technical problems in the prior art that the inner layer of a single plastic-coated pipe has poor anti-rust ability and the outer layer has poor anti-aging ability

Method used

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  • Plastic-lined steel plastic composite tube and manufacturing method thereof
  • Plastic-lined steel plastic composite tube and manufacturing method thereof
  • Plastic-lined steel plastic composite tube and manufacturing method thereof

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0030] This embodiment is a plastic-lined steel-plastic composite pipe, which includes a plastic inner pipe 1 and a steel intermediate pipe 2, and the outer surface of the steel intermediate pipe is coated with an epoxy or polyester material with protection and aging resistance. Layer paint 3. Among them, epoxy has strong flame retardancy and can be used in the field of fire protection, while polyester has strong ultraviolet aging resistance and can be used for surface-mounted pipes.

[0031] Wherein the plastic lining pipe 1 is thermoplastic, preferably, said thermoplastic is PVC, PVC-C, PE, PERT, PPR, ABS.

[0032] Wherein the steel intermediate pipe 2 is a phosphated steel pipe, preferably, straight seam welding, spiral seam submerg...

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Abstract

The invention relates to the field of a steel plastic tube, in particular to a plastic-lined steel plastic composite tube and a manufacturing method thereof. The plastic-lined steel plastic composite tube comprises a plastic lining tube and a steel intermediate tube, wherein the outer of the steel intermediate tube is coated with outer paint of epoxy or polyester materials. Because of internal plastic lining and external plastic coating, the steel plastic tube makes full use of inlayer corrosion protection and rust protection of the plastic lining and favorable aging, functionalization (e.g. flame retardance and the like) and other properties of the external plastic coating, thereby improving the respective defects caused by single plastic lining and single plastic coating.

Description

technical field [0001] The invention relates to the field of steel-plastic pipes, in particular to a plastic-lined steel-plastic composite pipe and a manufacturing method thereof. Background technique [0002] Due to the dual advantages of plastic and steel, the steel-plastic composite pipe can not only ensure the hygiene of the conveyed water, but also withstand a large conveying pressure, thus solving the problems faced by using steel pipes or plastic pipes alone. At present, steel-plastic composite pipe has become a rapidly developing field in the pressure pipeline industry. [0003] However, there are some defects in the current steel-plastic pipe products. For example, the plastic pipe used for the single plastic-lined steel-plastic pipe adopts the ordinary pipeline production process, and the plastic lining needs to be preheated first, and then inflated with high-pressure gas. Due to the memory effect of plastic, the pipe tends to shrink inward during the subsequent u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147
Inventor 文巍伟汤毅方有泉
Owner GUANGDONG LIANSU TECH INDAL
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