SA709 Grade 50W Corten Steel Pipe

SA709 Grade 50W Corten Steel Pipe is a high-strength, low-alloy structural tubing specified by ASME SA709, designed for bridge construction, infrastructure, and heavy-duty outdoor applications. Its chemical composition allows the formation of a stable, protective oxide layer on the surface, providing exceptional atmospheric corrosion resistance without the need for painting.

With a minimum yield strength of 50 ksi (345 MPa) and excellent weldability, this corten steel pipe is ideal for structures exposed to rain, sunlight, wind, and industrial pollutants.

✅ Key Features

• Bridge-Grade Strength – Ideal for load-bearing infrastructure

• Superior Weathering Performance – Forms rust-like patina layer

• Low Maintenance – Eliminates need for coatings or painting

• Excellent Weldability & Machinability

• AASHTO & DOT Compliance – Suitable for public works projects

🏗 Common Applications

• Structural bridge pipe supports and trusses

• Architectural tube columns and frames

• Outdoor railing systems and light poles

• Highway signage supports and guard rails

• Marine and coastal tubular infrastructure

⚙️ Mechanical Properties

Standard: ASME SA709 / AASHTO M270 Equivalent
Material Type: Weathering Steel (Corten Equivalent)

🔬 Chemical Composition Highlights

• Copper (Cu): 0.25–0.40%

• Chromium (Cr): 0.40–0.65%

• Nickel (Ni): 0.40–0.65%

• Phosphorus (P): 0.04–0.15%

• Low Carbon & Sulfur – Improved weldability and formability

This alloy composition ensures superior resistance to atmospheric corrosion, making it ideal for long-term outdoor use.

📦 Supply & Services

• Pipe Types: Round, square, rectangular

• Surface Finish: Mill finish, oiled, sandblasted, pre-rusted

• End Options: Plain / beveled / threaded

• Processing Services: Laser cutting, CNC punching, bending

• Certification: ASME SA709 / EN10204 3.1 / SGS, BV on request