Located in Yuling Industrial Park, Lingbao, Sanmenxia, this project is part of the key‑transformation “Relocate‑to‑Park” multi‑metal comprehensive‑utilization program. It adopts bolt‑ball joint space grid structure for the raw‑material warehouse roof to realize closed storage and restrain dust emission. Special anti‑corrosion design for grid members and joints is adopted for corrosive environment in non‑ferrous smelting plant. We completed grid detailing, fabrication, anti‑corrosion coating and on‑site erection to guarantee structural safety of raw‑material storage shed.