Prefab Metal Steel Structure Frame Prefabricated High Rise Multi Residential House Apartment Steel Structure Building. Customized Design: Fully customizable design, sizes, and structural types to meet specific customer requirements. Long Service Life: Designed for a service life of up to 70 years with reduced construction waste. Wide Span Capability: Max span up to 36 meters without middle columns, available in single or multiple spans. Fast Construction: Pre-cut, pre-drilled, and pre-painted factory-made items ensure quick installation and labor savings. High-Quality Materials: Constructed with Q235/Q345 H-section steel, galvanized steel, and anti-rust paint coating. Versatile Applications: Suitable for warehouses, villas, dormitories, temporary offices, and workshops. Certified Quality: ISO and CE certified with international quality standards and construction qualifications. Cost Effective: Unit price ranges from USD 30 to USD 70 per square meter based on customer requests.