The sub-structure system provides support and stability to the main system, which mainly includes propping system, purlin system and other accessories. The stability and the endurance of the sub-structure system directly affect the safety of main structure.
JinQi’s solutions:
Purlins: The purlins are used to provide sideway prop to roof boards and steel beams. JinQi applies Z-shape, C-shape section and serial crossing solutions that are economical and effective.
Enclosure beam: The beam is used to support roof boars. JinQi uses C-section beam for better outlooks and easier connection with doors and windows.
Raw materials: JinQi uses high-stress steel boards whose minimum subdue intensity is 3,510kg/cm2 and the minimum yield intensity is 345MPa. The surface of the base materials are painted with anti-rust coating or galvanization and the galvanized thickness reaches 275g/m2. These ensure longer life and conform to the national standards concerned.
Accessories: JinQi is committed to the research in propping system, joint and propping accessories to ensure security and reliability of sub-structure systems.

C-shape purlins Super strong anti-rust performance: The surface of the base materials experienced consistent and high-strength double-surface galvanization, which conforms to national standards with the galvanized thickness of 275g/m2. Superb high-stress materials: The minimum yield intensity is 345MPa, which conforms to national standards and provides strong joint support between roves and walls.

Z –shape purlins Super strong anti-rust performance: The surface of the base materials experienced consistent and high-strength double-surface galvanization, which conforms to national standards with the galvanized thickness of 275g/m2. Superb high-stress materials: The minimum yield intensity is 345MPa, which conforms to national standards and provides strong joint support between roves and walls and can be used for cross connection, which saves the consumption of steel usage.