... corrugations: 9~12 Corrugated steel roofing sheet1, Galvanized steel sheet thickness : 0.18mm-1.2mmAdequate raw material supply,pecial ... as required The usage of the corrugated steel roof sheet: steel house,suburban housing,villa,kindergarten,model house for ... old structures,warehouse,steel structure house.Corrugated Steel Roofing Sheet,light weight,abundant colors,easy installation,water proof,long ...