Corrugated steel pipe haved dual type

A technology for corrugated steel pipes and plastic pipes, applied in the field of corrugated steel pipes, can solve the problems of difficulty in connecting corrugated steel pipes and reduced productivity.

Inactive Publication Date: 2009-11-04
DONG WON STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, it is very difficult to connect individual corrugated steel pipes, resulting in a decrease in productivity

Method used

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  • Corrugated steel pipe haved dual type
  • Corrugated steel pipe haved dual type

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Hereinafter, a corrugated steel pipe having a double structure according to the present invention will be described with reference to the accompanying drawings.

[0017] figure 1 What is shown is a partially enlarged view of a corrugated steel pipe 10 connected with a smooth-walled plastic pipe according to an embodiment of the present invention. figure 2 Shown is an enlarged partial view of connected corrugated steel pipes 10 according to an embodiment of the present invention.

[0018] refer to figure 1 with figure 2 , a pipe having a double structure of the present invention includes: a corrugated steel pipe 10 having a predetermined length and having an inner peripheral surface formed with a helical protruding portion and an outer peripheral surface formed with a helical protruding portion, A plastic pipe 20 with a smooth wall is inserted into the corrugated steel pipe 10. The outer diameter of the plastic pipe 20 with a smooth wall is equal to the inner diamet...

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PUM

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Abstract

Provided is a corrugated steel pipe with a double structure, and more particularly, to a corrugated steel pipe with a double structure, which can dispose a smooth- walled plastic pipe in a corrugated steel pipe more conveniently, thereby providing a simple construction and conveniently assembling corrugated steel pipes while simultaneously improving a coupling force and a sealing force.

Description

technical field [0001] The invention relates to a corrugated steel pipe with a double structure, in particular to a corrugated steel pipe with a double structure that can more conveniently install a plastic pipe with a smooth wall in the corrugated steel pipe, thereby providing a corrugated steel pipe with a simple structure and easy installation. Steel pipe, and at the same time improve the connection strength and sealing force. Background technique [0002] Underground pipes include concrete pipes and cast iron pipes. Although such concrete pipes or cast iron pipes including reinforced concrete pipes can withstand heavy loads or soil pressure, the heavy weight and large volume of the concrete pipes or cast iron pipes make transportation, installation and disassembly difficult. In addition, since the quality of concrete depends on the processing conditions of concrete, defective products will be produced under adverse conditions such as winter. [0003] To overcome these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/00
CPCF16L25/0036Y10T29/4998F16L9/18F16L23/00
Inventor 李长燮
Owner DONG WON STEEL
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