... build+rebuild stable structure cheap cost environment protection STEEL workshopsBrand nameLongtai steel structureModel numberSteel workshopsmeterialQ235 and Q345surfaceHot-dip galvanized or paintedRoof ... to your require or your drawingWe can design the steel workshops free if you don’t have the drawing, ... as the wind speed,snowload,eathquake and so on. high quality STEEL construction workshops