... System 1. Material: Q195, Q215, Q235, Q345, etc 2. Surface Treatment: Electro galvanized, hot dipped galvanized, painting, etc3. Convenient to lift,assembly ... . (8)using for shipbuilding industry,military,civil aircraft maintenance industry assembly. (9)using for outdoor billboard,high-level roof facilities repairment ... to regular customer or customer with nice reputation. Scaffolding Frame System