GB/T 4171 Q355GNH steel plate is a high-weather-resistant structural steel primarily used for manufacturing steel structures or components exposed to atmospheric environments over long periods. Its typical applications include:
Bridges and Building Structures
Bridge Engineering: Used for manufacturing main girders, cross beams, and bridge decks, especially in highly corrosive environments such as marine areas, industrial pollution zones, or high-humidity regions.
Building Structures: Suitable for exposed steel structures in large-scale buildings like high-rises, factories, and sports arenas, such as roof purlins and wall supports.
Vehicles and Rail Transportation
Railway Vehicles: Employed in the fabrication of freight carriages, containers, and railway bridges, offering excellent atmospheric corrosion resistance to extend service life.
Vehicle Engineering: Applied to frames, chassis, and other components of automobiles and trucks, reducing maintenance costs caused by corrosion.
Energy and Chemical Facilities
Oil and Gas: Used for manufacturing oil pipelines, storage tanks, and offshore platforms, particularly in coastal or desert regions with high corrosivity.
Chemical Equipment: Suitable for chemical reactors, storage tanks, and pipelines, capable of resisting erosion from corrosive media such as hydrogen sulfide and chlorides.
Port and Marine Engineering
Port Facilities: Utilized for manufacturing docks, breakwaters, and crane rails, capable of withstanding harsh environments like seawater and salt spray.
Offshore Platforms: Applied to offshore oil drilling platforms and wind turbine towers, offering strong resistance to marine atmospheric corrosion.
Containers and Logistics Equipment
Container Manufacturing: Used for manufacturing maritime and railway transport containers, reducing the frequency of repairs and replacements due to corrosion.
Logistics Equipment: Suitable for storage and logistics equipment such as racks and pallets, extending service life and lowering operational costs.
Power and Communication Facilities
Power Towers: Employed in the fabrication of transmission line towers and substation supports, capable of resisting atmospheric corrosion and harsh weather conditions.
Communication Towers: Applied to mobile communication base stations and microwave communication towers, reducing structural damage caused by corrosion.
This steel plate is renowned for its high weather resistance, excellent mechanical properties, good weldability, and cost-effectiveness, making it an ideal material for structural applications in atmospheric environments.
