Q345NH is widely used across industries thanks to its excellent atmospheric corrosion resistance, medium strength, good weldability and low maintenance cost. Below are its typical applications by sector:
1. Construction & Architecture
Curtain walls, exterior cladding, and facade panels using the natural rust-patina aesthetic.
Steel frames for outdoor public buildings, stadiums, and exhibition halls.
Canopies, sunshades, railings, and landscape corridors.
Retaining walls, garden structures, flower pots, sculptures, and decorative art installations.
2. Bridge Engineering
Main girders, crossbeams, and components for highway bridges, railway bridges, and pedestrian bridges.
Bridge guardrails, sound barriers, and auxiliary steel structures.
Especially suitable for unpainted bridges to reduce long-term maintenance costs.
3. Transportation & Vehicle Manufacturing
Railway freight wagon bodies, underframes, side walls, and end walls.
Container frames and body components for intermodal transport.
Chassis and external parts for heavy trucks, engineering vehicles, and special vehicles exposed to the outdoors.
4. Electric Power & Communication
Transmission line towers, substation steel structures, and high-voltage support frames.
Communication signal towers, microwave towers, and telecommunication support parts.
Wind turbine auxiliary supports and outdoor electrical equipment casings.
5. Port & Water Transport (Mild Environments Only)
Inland port trestles, conveyor supports, and storage racking.
Shore-based cranes and outdoor mechanical structures away from seawater splash.
Not suitable for salt-heavy coastal splash zones or immersion without coating.
6. Machinery & Engineering Equipment
Outdoor engineering machinery frames, mining equipment shells, and agricultural machinery parts.
Steel structures for parking systems, outdoor elevators, and public equipment.
Pipe racks, support frames, and platforms in petrochemical or industrial plants exposed to atmosphere.
7. Urban Infrastructure & Public Works
Street lamp poles, traffic sign brackets, and highway guardrails.
Bus stations, bicycle sheds, and public facility steel structures.
Urban landscape bridges, river revetments, and waterfront decorative structures.
