| 摘要 |
A metal roof panel having its longitudinal edges roll-formed to define a double locking standing seam structure along both edges. An integral upstanding flange is formed on one longitudinal edge with a lower male locking means and an upper female locking means. An integral upstanding flange is formed on the other longitudinal edge with a lower female locking means and an upper male locking means. A plurality of roof clips are adapted to have one side nested in the lower female locking means of one panel and held therein by the lower male locking means on an adjacently disposed panel.
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