Angle relaxation: The process of rolling flat sheets into various types of pleats.

The thickness of the colored steel sheet is determined by the coil provided at the time of purchase, while the width is decided by the model of the press machine. Color steel sheets with a thickness of 0.8mm or more are suitable for roofs. Sheets with a thickness under 0.8mm are for walls, and the width of walls should slightly vary (the wider the width, the lower the wave peak, which is more aesthetically pleasing). Common wall widths are 0.82, 0.9, and 0.95.