... assemble and dismantle. 3,Easy to maintain. Steel structure productsSteel structure is widely used in warehouse,workshop,garage, ... customer's requriements.We have been exporting our steel structure to New Zealand,Australia,North America, Indonisia, ... (length, width, eave height, etc.)2.Roof structure style: slope style or curved style?3.Door ... have4).earthquake load if have portal frame steel structure