... pre-painted sheets with kinds of wave sections... Product Introduce: Corrugated sheets are roll formed by roll forming machines,the thickness ... steel, Galvalume Steel,Galvalume Pre-painted sheet and aluminium sheet. Corrugated sheet in different models: Direct overlaped model,screw hidden model ... ,self-locked model or as you want. Corrugated Sheets,Deck Board,Wall & Roof Plys