Prefab Customized Steel Structure Car 4s Shop with Curtain Wall (KXD-SSB124) Product Overview Pre-engineered steel buildings are steel structures built over a structural concept of primary members, secondary members, roof and wall sheeting connected to each other and various other building components. These buildings can be provided with different structural and non-structural additions such as skylights, wall lights, turbo vents, ridge ventilators, louvers, roof monitors,
