| 摘要 |
PURPOSE: A duct joint with simplified construction is provided to improve working stability by preventing a sharp flange from being exposed to outside after construction. CONSTITUTION: A duct joint with simplified construction comprises a first flange(2), a second flange(2'), a connection bar(4), and a gasket(3). The first and second flanges are attached on joint ends of duct units. The connection bar connects the first and second flanges. The gasket is inserted into a contact part between the first and second flanges. Engaged pieces(210,210') and combining grooves(230,230') are formed in the contact part.
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