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What is PPGI?

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PPGI, also known as pre-coated steel, coil coated steel, and colour coated steel, stands for Pre-Painted Galvanised Iron. Galvanized Iron is obtained when coated steel is continuously hot dipped to form Zinc of purity greater than 99%. The galvanized coating provides cathodic and barrier protection to the base steel. PPGI is made by painting of Galvanized Iron prior to formation as it significantly reduces corrosion rate of zinc. Such a corrosion protection system makes PPGI attractive for structures designed to last a long time in aggressive atmospheres.

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