| 摘要 |
PURPOSE: A jointing device for a corrugated steel pipes is provided to enhance assembling intensity and compatibility and save manufacturing cost, since first and second tightening bolts are formed in the same structure. CONSTITUTION: A jointing device for a corrugated steel pipes consists of one joining member(10) and a pair of fixing members(12,12'). The cutting parts(24,24') of corrugated steel pipes to be joined are buried in bosh sides of the rubber ring(20) of the joining member and thus are firstly closed. Water-swelling resin layers are attached to both sides of the rubber ring. Since the volumes of the water-swelling resin layers are increased by the water or moisture of the inside or outside of the corrugated pipes, the rough cut parts of the corrugated pipes secondly close the gap between the corrugated pipes and the rubber ring or the gap due to assembling tolerance between corrugated pipes and the joining member.
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