After cold roll forming, finished tiles show irregular shape, excessive radian deviation, uneven surface and irregular ribs, failing to meet standard building material size requirements.
Main causes: misaligned forming rollers with poor parallelism, severely worn or deformed roller surface, unreasonable adjustment of roller gaps, and raw sheets with unqualified thickness and hardness.
Standard solutions: Recalibrate installation position and parallelism of all forming rollers; replace worn and deformed forming rollers; finely adjust each roller gap according to actual sheet thickness; recommend customers to use standard PPGI and galvanized steel sheets to ensure forming precision and regular
