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A METHOD OF BENDING METAL ROOFING SHEETS AND A BENDING APPARATUS
A METHOD OF BENDING METAL ROOFING SHEETS AND A BENDING APPARATUS
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机译:弯曲金属屋顶板的方法和弯曲装置
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摘要
Roofing of the type having a flat metal sheet to the upright edge by bending an edge end jimyeo bend by rolling the flat edge, whereby an edge-will be thinner gradually toward the bent edge. Bending edge not rolled sheet is also to be bent.
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