steel structure building project Strong and longlife, easy installation low cost . Specifications 1)Size: MOQ is 10m2, width X length X eave height, roof slope 2)Type: Single slope, double slope, muti slope; Single span, double-span, Multi-span, single floor, double floors! 3) Base: Cement and steel foundation bolts 4) Column and beam: Material Q345(S355JR)or Q235(S235JR) steel, all bolts ...