a. When the high quality color corrugated steel sheet is cut, the exposed surface should be facing downward to prevent the swarf generated during cutting from sticking to the coating film surface, causing the flaking gasification.

b. When the construction workers walk on the roof, they should step on the plate in the direction of drainage. They should step on the stringer along the direction of the stringer and wear soft flat shoes.

c. When PPGI corrugated roofing sheet for sale roof is to be longitudinally (rowed and erected), the length of the splicing should be more than 15 cm. The water-stopping glue should be applied according to the design drawing, and the overlapping position should be at the rib position (wall splicing) Should be more than 10 cm long, placed on the stipulations).

d. The self-tapping screws are fixed on the ribs. The recesses are based on the principle that the bottom surface of the self-tapping screws and the ribs are in line. ±1.5mm is qualified. The over-tightened part should be waterproof with water-proof glue, and the loose part should be re-locked.

e. When the daily work is completed, the color steel plate material of the truss and the ground should be tied firmly with nylon rope or hemp rope.

f. The self-tapping screws must be perpendicular to the support surface, and the compression washers must be complete.