| 摘要 |
PURPOSE: A branch pipe joint device of a corrugated steel pipe is provided to keep the joint between the corrugated steel pipe and a branch adapter watertight. CONSTITUTION: A branch pipe joint device of a corrugated steel pipe comprises a coupling flange(10), an insertion support part(20), a branch connection part(30), a watertight connecting band(40), and fastening holes(50). The insertion support part and the branch connection part are projected through the coupling flange on either side. The watertight connecting band is inserted to the outer side of the insertion support part with corrugation projections(42) fitted to the gullies of the corrugated steel pipe and the back side pressed onto the coupling flange. The fastening holes simultaneously pass through the coupling flange and the watertight connecting band.
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