Galvanized steel structures for 2-story warehouse send to New Caledonia
The open-air cargo yard of Yirong Steel Structure Factory is already busy. Galvanized steel structures are being shipped for a two-story warehouse project in New Caledonia. In the sun, bundles of steel beams and steel columns are shining with a uniform silver-gray luster. Workers use forklifts and cranes to stack galvanized steel components steadily in containers.
Why choose galvanizing for the project?
New Caledonia is located in the South Pacific and has a tropical marine climate. The average annual humidity exceeds 80%, and the concentration of salt spray at the seaside is high. If ordinary steel is directly exposed, it will rust due to electrochemical corrosion within two years, which will not only affect the structural strength, but also shorten the overall service life of the warehouse. All steel components of this project, from the load-bearing H-shaped steel columns and steel beams to the bolt sleeves connecting the nodes, and even the stair steps and railings, all use hot-dip galvanizing technology.
Galvanizing is not a simple paint, but a chemical protective suit for steel. Yirong’s galvanized steel structure adopts hot-dip galvanizing process, immersing the components in 450℃ zinc liquid, and the zinc layer is deeply integrated with the steel matrix to form a dense zinc oxide protective film. This film can isolate the steel from contact with air and moisture, and even in a salt spray environment, the anti-corrosion period can reach more than 25 years. Since the project site is close to the seaside and the warehouse stores environmentally sensitive goods such as electronic components, the corrosion resistance of the galvanized components is the long-term stable foundation of the project.
At 9 am, the delivery process officially started. In the center of the cargo yard, Ms. Li, the leader of the quality inspection team, is holding the “Component Factory List” and checking each item: “32 steel columns, specifications Q355B-Z275, galvanized layer thickness 85μm; 18 steel beams, length 6.8 meters, no missing galvanized layer; 24 stair steps, anti-skid groove processing conforms to the drawings…” After each item is checked, the worker will stick a QR code label printed with “NCL-20231108” on the component – scan the code to view the raw material batch, galvanized test report, installation location and other information of the component.
The packaging process is more meticulous:
Classification and stacking: Steel components are stacked by columns, beams, stairs, and connectors, and similar components are bundled together to avoid transportation collisions.
Moisture-proof protection: Each steel column is covered with a waterproof and moisture-proof film, and the interface is sealed with aluminum foil tape. EPE pearl cotton cushions are placed between steel beams to prevent transportation bumps from scratching the galvanized layer.
Reinforced transportation: Usually the components are bundled with 8mm diameter steel belts, and each span of steel beams is fixed with diagonal braces to ensure the stability of the structure during long-distance transportation (the steel components can also be packaged with customized frames).
Because New Caledonia is close to the sea and the air humidity is high, we wrapped a layer of waterproof tarpaulin on the outer layer of all packages, and sealed the seams of the tarpaulin with waterproof tape.
The galvanized steel structures are selected not only to extend the life of the warehouse, but also to reduce the cost of later maintenance. The galvanizing process and packaging details of Yirong Steel Structure make customers more confident that the project will be delivered on time.
