... sandwich panel 4 ISO9001 1500sqm Double Sloped Galvanized Color Coated Steel Shed I IntroductionCompared with the traditional concrete structure ... 180m,type:Single slope, double slope, muti slope; Single span, double-span, Multi-span, single floor, double floors! 3)Height: ... Ventilators, down pipe, outer gutter, etc 12)Surfrace: Paint or hot dip galvanize! 13) Packing: Main steel frame without packing ...