Q345GNH Corten Steel Pipe

Q345GNH is a high-strength atmospheric corrosion-resistant steel developed under GB/T 4171, with performance and appearance comparable to European EN S355J2W and ASTM A588. Its composition includes copper (Cu), chromium (Cr), and nickel (Ni), which together form a dense oxide layer (patina) when exposed to the atmosphere. This layer protects the steel from further corrosion and makes it ideal for long-term outdoor use without protective coatings.

With a yield strength of ≥345 MPa, Q345GNH is well-suited for load-bearing applications, particularly in infrastructure and public architecture.

🔍 Key Mechanical Properties

• Standard: GB/T 4171

• Yield Strength: ≥ 345 MPa

• Tensile Strength: 480–630 MPa

• Elongation: ≥ 20%

• Thickness Range: 2 mm – 120 mm

• Delivery Condition: Hot-rolled / normalized / thermomechanical

🏗 Common Uses

• Bridges, towers, and load-bearing frameworks

• Outdoor steel buildings and modular structures

• Industrial equipment housing and storage tanks

• Railway infrastructure and steel decks

• Garden and landscape design elements with high strength requirements

⚙️ Processing Capabilities

• Available Shapes: Plate, sheet, strip, coil

• Surface Options: Rusted, sandblasted, primed

• Machining Services: Laser/plasma cutting, drilling, welding

• Test Reports: MTC EN 10204 3.1, third-party inspections

• Packaging: Standard export bundle with protective wrapping

Q345GNH combines structural reliability and visual elegance, making it the perfect material for functional and architectural weathering steel applications.