What are the main applications of SGCC in the construction field?
These include corrugated roof panels, exterior wall cladding, ventilation ducts, roller shutters, window guards, steel structure purlins, railings, billboard frames, and embedded waterstop steel plates.
What are the weather resistance protection measures for SGCC used in outdoor construction?
Use a 180-275g/m² thick coating, sprayed with fluorocarbon or polyester paint. Increase the coating thickness in coastal and high-humidity areas. Regularly clean surface contaminants to prevent accelerated zinc corrosion.
What are the installation precautions for SGCC building cladding?
Use dedicated galvanized fasteners to avoid galvanic corrosion caused by contact between different metals; seal overlaps to prevent rainwater infiltration; avoid scratching the zinc layer during installation, and promptly repair any damaged areas.
What are the dimensional accuracy requirements for SGCC used in construction, and how is construction compatibility ensured?
Thickness accuracy ±0.02mm, length/width accuracy ±1mm. Dimensional checks are required for bulk purchases. Irregularly shaped parts must be custom-made in advance to ensure compatibility with the building structure. What are the limitations of using SGCC in steel structures?
It is only suitable for non-load-bearing or low-load-bearing steel structures (such as purlins and secondary frames). For the main load-bearing structure, structural steels such as Q235B and Q355B must be used. SGCC is not strong enough and is prone to deformation.