Precision-engineered steel structure hangar with high-strength galvanized steel framework for superior durability and corrosion resistance. Customizable large-span design up to 60m clear span, ideal for aircraft storage, industrial warehouses, and agricultural facilities. Modular prefab construction enables rapid assembly with bolted connections and laser-cut components for millimeter accuracy. Fire-retardant PU sandwich panels with 0.5mm color-coated steel sheets provide thermal insulation (-30°C to 120°C) and 50dB soundproofing. Wind-resistant up to 150km/h and snow load capacity of 1.5kN/m². Meets ASTM A36/A572 standards with hot-dip galvanized finish (275g/m² zinc coating). Includes integrated gutter system and optional skylight configurations.