436L Duplex Pipe Welding ASME SA268 Heat Exchanger Steel Pipe

The 436L Welded Stainless Steel Pipe, manufactured in accordance with ASME SA268, is a ferritic stainless steel tube designed for heat exchangers, condensers, and cooling systems operating in high-temperature and corrosive environments. Produced by Wuxi Korer Stainless Steel Co., Ltd., this pipe combines excellent resistance to oxidation, chloride corrosion, and stress cracking with superior thermal conductivity. Its low carbon and molybdenum-stabilized composition ensures excellent weldability and long service life in demanding industrial applications.

• Heat exchangers, evaporators, and condensers in power and petrochemical industries
• Automotive exhaust and EGR systems
• Refrigeration and air-conditioning equipment
• Desalination and marine heat recovery systems
• Chemical processing and oil refining pipelines

• Enhanced corrosion and oxidation resistance in high-temperature and acidic environments
• Excellent thermal transfer performance for efficient heat exchange
• Low carbon content minimizes intergranular corrosion after welding
• Good formability and weldability for industrial fabrication
• Fully compliant with ASME SA268 / ASTM A268 international standards

Raw Material Inspection → Forming → TIG Welding → Heat Treatment (Annealing) → Straightening → Pickling or Bright Annealing → Non-Destructive Testing (Eddy Current / Ultrasonic) → Dimensional & Visual Inspection → Marking → Packaging & Shipment.

A: 436L has added molybdenum, providing better corrosion and pitting resistance, especially in heat exchanger applications.

A: It is suitable for mildly saline environments; for long-term marine exposure, 316L or duplex grades are recommended.

A: Yes, 436L offers excellent weldability with minimal risk of grain growth or cracking.