... It is light, weatherable, stain-resistant, and easy to be welded, and its structure strength is moderate.Application:Trapezoidal corrugated ... as airport, , railway station, conference and exhibition center, stadiums, university buildings and so on.PerformanceExcellent self-tightness, free ... weldable ability of metal renders impeccable and waterproofing performance. TRAPEZOID CORRUGATED STEEL SHEET