Duplex Steel Flanges – MetalX Engineering Inc. MetalX Engineering Inc. is a trusted manufacturer and global supplier of premium Duplex Steel Flanges, engineered to deliver superior strength, corrosion resistance, and long-term durability in the most demanding industrial environments. Manufactured with precision and in compliance with international standards (ASME, ASTM, ANSI, EN, DIN), our flanges are widely used in oil & gas, petrochemical, marine, offshore, desalination, and chemical processing industries. Our Duplex and Super Duplex flanges offer excellent resistance to chloride-induced stress corrosion cracking, pitting, and crevice corrosion, making them ideal for aggressive and corrosive applications, especially in saltwater or high-chloride environments.

Product Specifications:

• Types Available: Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Lap Joint (LJ), Threaded (TH), Long Weld Neck (LWN)

• Grades Offered:

  • Duplex 2205 (UNS S31803 / S32205)

  • Super Duplex 2507 (UNS S32750 / S32760)

• Standards: ASME B16.5, ASTM A182 F51/F53/F55, DIN, EN 1092-1, ANSI

• Size Range: ½” to 48” (DN15–DN1200)

• Pressure Ratings: Class 150 to 2500 / PN6 to PN100
  
  

  Key Features:

  • High strength with excellent fatigue resistance

  • Outstanding resistance to chloride stress corrosion cracking

  • Suitable for marine, offshore, and subsea applications

  • Superior weldability and formability

  • Tested for pressure, mechanical strength, and chemical composition
    
    

    Typical Applications:

    • Oil & Gas exploration and processing

    • Desalination and water treatment plants

    • Marine and offshore platforms

    • Heat exchangers and pressure vessels

    • Petrochemical & chemical processing units

    • Power plants and energy infrastructure
      
      

      Why Choose MetalX Engineering Inc.?

      • In-house forging, CNC machining, and heat treatment capabilities

      • ISO, IBR, PED certified production processes

      • 100% tested with ultrasonic, PMI, and hydrostatic testing

      • Large inventory for quick delivery and global shipping

      • Customized manufacturing per client drawings/specifications
        
        

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