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Rectangular | Square | Round : High-Frequency Welded (HFW)
Corten Pipes are weathering steel pipes designed for outdoor, corrosive, and high-maintenance environments where conventional mild steel pipes deteriorate rapidly. At Sharoff Steel Suppliers, we manufacture and supply High-Frequency Welded (HFW) Corten / CRS pipes in Rectangular (RHS), Square (SHS), and Circular (CHS) forms.
These pipes are widely used in ducting, ash handling systems, chimneys, industrial exhausts, and exposed piping, where long service life and reduced corrosion-related failures are critical.
Corten pipes are fabricated from corrosion-resistant weathering steel coils. The steel forms a stable protective oxide layer when exposed to atmospheric conditions, slowing down further corrosion and reducing dependence on paint systems.
Unlike generic structural pipes, Corten pipes are selected for durability in aggressive environments, not just load carrying.
Rectangular Hollow Sections (RHS)
• 1.2 – 2.0 mm → 40×20 to 100×50 mm
• 4 – 5 mm → 50×30 to 150×50 mm
• 6 – 8 mm → 100×60 to 250×150 mm
Square Hollow Sections (SHS)
• 1.2 – 2.0 mm → 20×20 to 60×60 mm
• 4 – 5 mm → 30×30 to 100×100 mm
• 6 – 8 mm → 100×100 to 200×200 mm
Circular Hollow Sections (CHS / Pipes)
• 1.6 – 6.0 mm thickness
• OD range: 25 mm to 250 mm
Custom lengths and cut-to-size supply available.
All our Corten pipes are manufactured using High-Frequency Welding (HFW) technology to ensure consistent weld integrity and dimensional accuracy.
Key QC feature:
• Hydrostatic testing at 50 bar for 6 seconds, significantly reducing the risk of leakage in critical applications.
This makes the pipes suitable for process, ducting, and industrial piping systems, not just structural use.
Depending on project and availability, our Corten pipes are manufactured using coils conforming to:
• CORTEN-A / CORTEN-B
• ASTM A588 / ASTM A242
• EN 10025-5 S355J2W+N
• JIS G3125 SPA-H
• IS 11587 WR Steel
Grade selection is guided by application, exposure severity, and governing standard.
Structural & Support
• Exposed pipe racks
• Industrial frameworks
• Container Frames
Industrial & Power
• Flue gas ducts
• Chimney liners
• Air handling & exhaust systems
Ash & Bulk Handling
• Ash conveying lines
• Pneumatic transport pipes
Process & Utility
• Corrosive service pipelines
• Outdoor utility piping
For Air Pre-Heater tubes (ASTM A423), refer to our dedicated APH Pipes page.
Corten pipes offer:
• Slower corrosion in atmospheric exposure
• Longer service life in exposed installations
• Reduced maintenance and repainting
• Better lifecycle economics
They are particularly valuable where shutdown access is difficult or costly.
• Integrated CRS ecosystem (plates, coils, pipes)
• Ready stock and manufacturing-linked sourcing
• Proven experience in power, EPC, and industrial segments
• Clear differentiation between:
♦ Corten Pipes
♦ APH Pipes (ASTM A423)
♦ Structural WR steels
We help customers buy the right pipe for the duty, not just a corrosion-resistant label.
Are your Corten pipes seamless or welded?
They are High-Frequency Welded (HFW) pipes manufactured from weathering steel coils.
What shapes of Corten pipes do you supply?
Rectangular (RHS), Square (SHS), and Round/Circular (CHS).
Do you test pipes for leakage?
Yes. Pipes undergo hydrostatic testing at 50 bar for 6 seconds as part of quality assurance.
Are Corten pipes suitable for flue gas and ash handling?
Yes. These are among the most common applications, where mild steel pipes fail prematurely.
Should I use Corten Pipes or APH Pipes?
• Use Corten Pipes for general industrial ducting, pipelines, and exposed piping
• Use APH Pipes when the application is specifically Air Pre-Heater tubes under ASTM A423
Corten Pipes are a practical, durable solution for industrial piping and ducting exposed to corrosive atmospheres. When selected and manufactured correctly, they significantly outperform conventional carbon steel pipes in service life and reliability.
At Sharoff Steel Suppliers, Corten pipes are supplied with application clarity, quality assurance, and real-world manufacturing understanding.