Products
Super Duplex Stainless Steel Pipes and Tubes
Super duplex stainless steel pipes and tubes are engineered for applications that demand exceptional strength, corrosion resistance, and durability in harsh and corrosive environments. With its high chromium, molybdenum, and nitrogen content, super duplex stainless steel provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for industries such as oil and gas, chemical processing, marine, and more.
Key Benefits of Super Duplex Stainless Steel Pipes
- Superior Corrosion Resistance: Super duplex stainless steel offers excellent resistance to both localized and general corrosion, particularly in environments with high chloride levels.
- High Strength: With double the yield strength of standard austenitic stainless steels like 304 and 316, super duplex stainless steel provides structural reliability, even in high-pressure systems.
- Enhanced Weldability: The balanced microstructure of austenite and ferrite allows for better weldability, making it easier to fabricate into complex piping systems.
- Long-Term Cost Savings: Super duplex stainless steel’s durability reduces maintenance costs and extends service life, providing cost-effective solutions for high-stress applications.
Grades of Super Duplex Stainless Steel Pipes
Our super duplex stainless steel pipes are available in various grades to meet the requirements of different applications:
- Super Duplex 2507 (UNS S32750): The most widely used super duplex grade, known for its high resistance to chloride pitting and crevice corrosion, making it suitable for highly aggressive environments.
- Super Duplex 255 (UNS S32550): Similar to 2507 but with additional resistance to stress corrosion cracking and sulfide stress corrosion, commonly used in the oil and gas industry.
Applications of Super Duplex Stainless Steel Pipes
- Oil & Gas Industry: Super duplex pipes are widely used in offshore oil platforms, subsea systems, and refinery applications where high resistance to corrosion is essential.
- Chemical Processing: Super duplex is highly resistant to harsh chemicals, making it ideal for use in processing plants where exposure to acids, salts, and chemicals is common.
- Marine Applications: With excellent resistance to seawater corrosion, super duplex pipes are used in seawater cooling, desalination, and marine infrastructure.
- Power Generation: In both fossil and nuclear power plants, super duplex pipes provide durability and reliability in high-temperature, high-pressure applications.
- Water Treatment and Desalination Plants: Super duplex pipes offer resistance to biofouling and corrosion, making them suitable for water treatment facilities.
Types of Super Duplex Stainless Steel Pipes
- Seamless Pipes: Manufactured without a weld, these pipes offer enhanced pressure resistance and are often used in high-pressure applications.
- Welded Pipes: Welded super duplex pipes provide a cost-effective solution for large-diameter applications and are widely used in low- to medium-pressure systems.
- ERW Pipes (Electric Resistance Welded): Known for precise diameters and smooth finishes, ERW pipes are often used in structural applications.
- EFW Pipes (Electric Fusion Welded): Ideal for high-temperature and high-pressure environments, these pipes are commonly used in the energy and oil and gas industries.
Specifications and Standards
Our super duplex stainless steel pipes are manufactured to meet the highest quality standards, ensuring durability and consistency:
- ASTM A790: Specification for seamless and welded super duplex stainless steel pipes.
- ASTM A928: Specification for super duplex stainless steel electric fusion welded pipe.
- ASME B36.19M: Standard for stainless steel pipe dimensions and weights.
- EN 10216-5: European standard for duplex stainless steel seamless pipes for pressure purposes.
Surface Finishes and Treatments
Super duplex stainless steel pipes are available in a range of finishes to enhance durability and appearance:
- Pickled Finish: Removes surface impurities, providing a clean, corrosion-resistant surface.
- Polished Finish: Available in various grades for a smooth and aesthetically pleasing surface.
- Bead Blasted: Offers a matte, non-reflective surface, suitable for applications requiring a more rugged appearance.
- Electropolished: Provides a bright, mirror-like finish, ideal for sanitary and pharmaceutical applications
Customization Options
We offer super duplex stainless steel pipes tailored to meet specific project needs:
- Size and Thickness: Available in a range of diameters and wall thicknesses to accommodate different pressure and flow requirements.
- Length: Pipes can be cut to standard or custom lengths based on project specifications.
- Surface Treatments: Additional treatments like electropolishing or bead blasting are available to suit the application environment.
Quality Assurance
Each super duplex stainless steel pipe undergoes rigorous quality checks to ensure optimal performance and durability:
- Mechanical Testing: Includes tensile strength, hardness, and impact resistance tests to ensure structural integrity.
- Corrosion Resistance Testing: Ensures pipes meet high resistance standards for challenging environments.
- Dimensional Accuracy: Precision-cut to meet dimensional standards, ensuring compatibility with piping systems.
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Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry