Prepainted Galvanized Coil PPGI Corrugated Metal Roofing ...
The galvanization method used must be hot-dip galvanization as it better ensures the durability of the GI Corrugated Roofing Sheet. Other methods such as electro-galvanization should be avoided because the coating thickness is thinner than hot-dip galvanization and the durability of the GI Corrugated Roofing Sheet will be reduced as a result.
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