ASTM A588 Grade B Corten steel pipe

ASTM A588 Grade B Corten steel pipe is a structural weathering steel tubing designed for use in environments where long-term corrosion resistance is essential. Compared to Grade A, Grade B offers slightly higher strength, making it ideal for heavy-load applications in outdoor and industrial environments.

Thanks to its copper, chromium, and nickel alloy content, A588 Gr. B forms a protective oxide film that resists rust, salt spray, and pollutants—perfect for infrastructure, bridges, and marine construction.

🔍 Advantages

• High-Strength Tubing – Yield strength ≥ 50 ksi (345 MPa), tensile strength ≥ 70 ksi

• Corrosion-Resistant Alloy – Withstands cycles of moisture, salt, and UV

• Long Lifespan Outdoors – Ideal for structures exposed to open air or humidity

• Weldable & Machinable – Supports advanced fabrication techniques

• Visually Appealing Finish – Rust-look surface for modern design projects

🏗 Applications

• Weathering steel bridge components and guardrails

• Pipe trusses and frame tubes in outdoor buildings

• Corten signage poles and street furniture supports

• Energy infrastructure (chimney stacks, ducting)

• Seaside steel art installations and architectural pipe work

⚙️ Mechanical & Chemical Properties

Chemical Composition Highlights:

• Cu: 0.25–0.4%

• Cr: 0.40–0.7%

• Ni: 0.40–0.65%

• P: 0.04–0.15%

• Low carbon & sulfur content for weldability

📦 Supply Options

• Types: Round, square, rectangular Corten tubes

• Surface finishes: Rusted, mill finish, sandblasted, oiled

• Custom fabrication and assembly available

• Export packaging with ends capped and protected

• Third-party inspection and mill certificates available