Duplex Steel Pipe Tubes
Duplex Steel Pipe – Pearl Steel Industry
Pearl Steel Industry is a renowned name in the supply of Duplex Steel Pipes in India, known for providing top-quality products that meet industrial standards. Our comprehensive range of Duplex Stainless Steel Pipes & Tubes is designed to offer exceptional corrosion resistance, superior strength, and excellent durability. These pipes are ideal for demanding environments, including the oil and gas industry, marine applications, chemical processing, and desalination plants.
As a leading supplier, we specialize in providing Duplex Steel Pipes and Tubes that are crafted with precision to meet international standards. We source high-quality Duplex UNS S31803 pipes and Duplex UNS S32205 pipes, ensuring superior performance, reliability, and long service life. At Pearl Steel Industry, we understand the criticality of each application, which is why we offer customized solutions for our clients to meet specific needs.
What is Duplex Steel Pipe?
A Duplex Steel Pipe is manufactured from duplex stainless steel, which features a two-phase microstructure consisting of both austenitic and ferritic phases. This structure combines the best properties of both phases, resulting in a material that provides:
- High Strength: Duplex steels are stronger than both austenitic and ferritic steels, providing excellent resistance to pressure and mechanical stress.
- Superior Corrosion Resistance: The combination of austenite and ferrite phases offers resistance to corrosion in aggressive environments, including chloride-rich conditions, making Duplex Stainless Steel Pipes & Tubes ideal for marine, chemical, and oil & gas industries.
- Good Weldability: Duplex steels can be welded, though careful attention to welding techniques is required to maintain their properties.
At Pearl Steel Industry, our Duplex UNS S31803 pipes and Duplex UNS S32205 pipes are known for their excellent mechanical properties, making them suitable for a wide range of applications.
Manufacturing Process of Duplex Steel Pipes
The manufacturing process of Duplex Steel Pipes and Tubes involves several critical steps to ensure high quality:
- Rolling and Welding: The process begins with the rolling of strips into tubular shapes. The edges of the strip are welded using the TIG welding process to form a seamless tube.
- Length Cutting: After welding, the tubes are cut to the required lengths using methods like saw cutting, lathe cutting, and laser cutting.
- Cleaning and Heating: The tubes undergo a cleaning process to remove dirt and contaminants. Heat treatment is then applied to relieve any stresses caused by welding and the rolling process.
- Cold Drawing Process: If the desired size isn’t achieved from the rolling process, the tubes are cold drawn using die plugs, enabling them to achieve the exact size specifications required for various applications.
- Finishing Process: After forming and heat treatment, the tubes undergo cleaning, pickling, and straightening. The final product is marked with important details such as the grade of the material, size, and heat number.
These processes ensure that Nickel Alloy Pipes and Tubes and Duplex Steel UNS S32205 Pipes are manufactured to meet the highest quality standards.
Specifications of Duplex Steel Pipes
Pearl Steel Industry offers a wide range of Duplex Steel Pipes to cater to diverse industrial needs. Here are some key specifications:
- Material Grade: Our Duplex Steel Pipes are available in various grades, including ASTM A790/A789 UNS S31803, ASTM A790 UNS S32205, and others.
- Size Range: We offer a wide range of sizes, from small-diameter pipes used for plumbing to large-diameter pipes used in industrial systems.
- Wall Thickness: The wall thickness varies according to the pressure and temperature requirements, with standard schedules like Schedule 10, Schedule 40, and Schedule 80.
- Length: Our Duplex Steel Pipes are typically available in lengths of 6 meters (20 feet), but custom lengths can also be fabricated according to the client’s needs.
- End Connections: Depending on the application, we provide various types of end connections, including plain ends, beveled ends, threaded ends, and socket weld ends.
- Surface Finish: Our Duplex Steel Pipes can have various surface finishes, including annealed, pickled, and polished, depending on the application requirements.
- Standards: We ensure our Duplex Steel Pipes and Tubes meet various international standards like ASTM, ASME, and EN.
Pearl Steel Industry is a trusted UNS S31803 Pipes Supplier and Duplex Steel UNS S32205 Pipes Distributor, ensuring timely delivery and compliance with global standards.
Equivalent Grades of Duplex Steel Pipes
Several international equivalents of Duplex Steel Pipes share similar chemical compositions and mechanical properties. These include:
- ASTM A790/A789 UNS S31803 / UNS S32205
- EN 1.4462 / X2CrNiMoN22-5-3 / F51 / 2205
These equivalent grades allow for interchangeability in various applications, ensuring that Duplex Stainless Steel Pipes & Tubes meet specific needs in both domestic and international markets. Pearl Steel Industry helps ensure that clients choose the right grade and type of pipe for their applications.
Chemical Composition of Duplex Steel Pipes
The chemical composition of Duplex Steel Pipes is what gives them their superior properties. The standard composition of Duplex UNS S31803 Pipes and Duplex UNS S32205 Pipes includes:
- Chromium: 21-23%
- Nickel: 4.5-6.5%
- Molybdenum: 2.5-3.5%
- Nitrogen: 0.08-0.20%
These elements enhance the material’s ability to resist corrosion, especially in chloride-rich environments, and contribute to the strength and toughness of Duplex Steel Pipes and Tubes.
Mechanical Properties of Duplex Steel Pipes
Duplex Steel Pipes have a combination of both austenitic and ferritic structures that give them superior mechanical properties:
- Strength: Duplex Steel Pipes are stronger than both austenitic and ferritic steels. This makes them ideal for use in high-pressure applications.
- Corrosion Resistance: The balanced structure offers superior resistance to pitting and crevice corrosion, especially in chloride-containing environments.
- Weldability: While Duplex Steel Pipes can be welded, special care is needed during the welding process to ensure that the desired balance of phases is maintained.
- Temperature Resistance: Duplex Steel Pipes and Tubes maintain high strength and durability even in high-temperature environments, making them ideal for applications in industries like petrochemical processing.
Why Choose Pearl Steel Industry?
- Quality Assurance: We supply only the highest quality Duplex Steel Pipes and Nickel Alloy Pipes and Tubes.
- Timely Delivery: We ensure fast and efficient delivery across the globe, backed by robust logistical operations.
- Expertise: With years of industry experience, we understand the specific requirements of different applications.
- Customization: We offer tailored solutions with customized sizes, lengths, and grades of Duplex Steel Pipes to meet unique project needs.
Contact Us
For more information on Duplex Steel Pipes, Duplex UNS S31803 Pipes, Duplex UNS S32205 Pipes, and Duplex Stainless Steel Pipes & Tubes, get in touch with Pearl Steel Industry. We provide high-quality products, quick delivery, and customer support to help you achieve the best possible outcomes for your project.