... is20Ton/Tons2.type:single slope, double slope, muti-slope ;single span,double-span ,Multi-span, single floor, double floors3 ... ~C320,Z160~Z3007.roof and wall panel:single colorful corrugated steel sheet0.326~0.6mm thick ... ,YX26-205-820(820mm wide),single colorful corrugated steel sheet0.326~0.6mm thick ... .6mm thick ,YX51-380-760(760mm wide),single colorful corrugated steel sheet0.376~0.6mmthick , ...