Corrugated steel pipe haved dual type

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 ...

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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

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