Wanan supplied hot-dip galvanized cable tray systems for the Shenzhen Airport Ground Transportation Center, a large-scale transit hub requiring corrosion-resistant, high-load cable management across long spans. This case study covers the project's technical requirements, the products selected, and the results delivered.

Learn how to choose the right cable tray system for data center projects — load capacity, coating, ventilation and certification requirements EPC contractors need to check.

C-shaped and U-shaped steel are the two dominant profile types in solar mounting structures, and the choice comes down to a single structural feature: the returning lip on a C-profile's flange, which adds resistance to bending and buckling that a U-profile lacks. This makes C-shaped steel the standard choice for purlins and longer-span structural members, while U-shaped steel's open channel suits base rails and track systems where sliding clamp assembly matters more than maximum span capacity. This guide compares cross-section strength, typical applications, material finish considerations and how to decide between the two, helping EPC contractors and racking designers select the right profile for their site's span and load requirements.