Q355GNH H Beam is a high-strength, corrosion-resistant structural steel specifically engineered for bridge construction and related infrastructure.
Its superior atmospheric corrosion resistance makes it ideal for long-term outdoor exposure, reducing the need for maintenance or repainting over the lifespan of the structure.
In bridge applications, Q355GNH H Beams are commonly used for:
Main girders and supporting beams – providing the primary load-bearing structure for highway, railway, and pedestrian bridges.
Bridge decks and cross beams – ensuring stability while resisting environmental corrosion from rain, humidity, and temperature fluctuations.
Railway viaducts and overpasses – offering high yield strength and toughness to withstand dynamic loads from trains and vehicles.
Suspension and cable-stayed bridge components – providing durable structural elements that maintain integrity in harsh climates.
The material's self-protective rust layer forms naturally when exposed to the atmosphere, creating a dense barrier that prevents further corrosion.
This significantly extends the service life of bridges, minimizes maintenance costs, and ensures structural safety.
With a minimum yield strength of 355 MPa, excellent weldability, and consistent dimensional quality, Q355GNH H Beam is the preferred choice for modern bridge engineers seeking a combination of durability, safety, and long-term performance in challenging outdoor environments.
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