How colour-coated steel is made: from coil to finished roof sheet

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2026-01-06 07:18:55 - Çevir

Colour-coated steel — often sold as PPGI/PPGL or simply “prepainted” coil — is a workhorse of modern roofing. It combines the structural strength of a steel substrate with a durable, factory-applied paint system that resists UV, corrosion and visual wear. Here’s a clear, step-by-step look at how a plain steel coil becomes a finished, profiled roof sheet. 1. Raw...

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