... strength 2. Easy to install 3. Fireproof, Insulated, steel structure Detailed Product Description:1.Complete building package ready for erection ... common grade:Q235B/Q345B.3.Application:warehouse,workshop,shed.Steel Structure Fabrication characteristics:1.Ligth weight,high operation reliablity2.Small building ... ,sound insulation,heat preservation.7.Nice appearance. Heavy steel structure fabrication