
Short Construction Period Precision S275jr Prefab Metal Steel Structure Gymnasium. Rapid Construction: Modular prefabricated components reduce on-site construction time by 40-60% compared to traditional concrete. Column-Free Space: High-strength steel frames enable wide spans for basketball, volleyball, and multi-purpose sports halls. Seismic & Wind Resistance: Engineered with Q355/S355/Q460 steel for outstanding earthquake and wind resistance in harsh climates. High-Precision Fabrication: CNC cutting, automated welding, and BIM-based detailing ensure accurate fit-up and clash-free installation. Durable Surface Protection: Sandblasted to Sa2.5 with epoxy zinc-rich primers or hot-dip galvanizing for 30-50+ years service life. Eco-Friendly Design: 100% recyclable structural steel compatible with solar panels and smart building management systems. Customization Options: Full customization available from samples or designs with flexible customization options. Comprehensive Warranty: 1-year warranty period covering mechanical defects with free parts and labor.