... pitch: 76 No.of corrugations: 9~12 Corrugated steel roofing sheet1, Galvanized steel sheet thickness : 0.18mm-1.2mmAdequate ... design keeps the good balance of draining . Easy to install ,Economically and practically 2, Products descriptionThe base materials are ... of old structures,warehouse,steel structure house.Corrugated Steel Roofing Sheet,light weight,abundant colors,easy installation,water proof ...