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edge closing of color steel plates is generally implemented before the color steel plates are positioned, and of course, it is also implemented after the installation, but it needs to leave enough clearance at the top of the color steel plates.

The specific edge-closing process of the color steel plate is to place the edge-closing tool on the color steel plate chassis, hold the terminal of the color steel plate with the tool, and fold the chassis upwards. When the slab is used on the roof with a slope lower than 1/5, the chassis end at the lower end of the color steel plate is slightly bent downward to ensure that the rainwater is discharged along the color steel terminal. At the same time, the downward flanging operation must be carried out after the color steel plate is fixed, otherwise this operation will be hindered. When folding the edge end of the color steel plate, properly open the mouth of the lower pry tool, clamp the tool to the chassis end and push it inward as far as possible. The tool clings to the end of the chassis, and at the same time, the handle is shaken about 211, so that a downward hem will be formed at the end of the color steel plate.