Duplex Steel Tube

Duplex Steel Tube Specification

Product Type
Industrial Tube

Material
Duplex Steel

Type
Seamless / Welded Tube

Shape
Round

Technics
Cold Rolled, Cold Drawn

Surface Treatment
Polished, Pickled

Standard
ASTM A789 / ASTM A790, DIN EN 10216-5

Thickness
0.5 mm - 20 mm

Length
Up to 12000 mm

Outer Diameter
6 mm - 630 mm

Grade
UNS S31803, UNS S32205, 2205, 2507

Color
Silver

Hardness
Max 290 HB

Application
Oil & Gas, Chemical, Petrochemical, Power Plants, Marine Industries

Corrosion Resistance
Excellent

Packaging
Standard Export Packing

Yield Strength
450 MPa (min)

Tensile Strength
620 MPa (min)

Pressure Rating
High Pressure Application

Elongation
25% (min)

Availability
Ready Stock

End
Plain, Beveled, Threaded

Heat Treatment
Solution Annealed

About Duplex Steel Tube

We are actively involved in rendering a unique series of Duplex Steel Tube. It is ideally used in chemical as well as pipe industries. This tube is perfectly coated with steel material which can be easily transported and welded. It enables a good mechanical properties and rust proof material. Duplex Steel Tube is also helps in the production of oil& gas industries. It contains a high chromium content to utilized in a convenient manner.

Superior Mechanical Performance

Duplex Steel Tubes provide exemplary strength with a minimum tensile strength of 620 MPa and yield strength of 450 MPa, making them suited for high-pressure applications. The solution annealed finish and cold rolled or drawn manufacturing further enhance durability and performance in rigorous environments.

Versatile Applications Across Industries

These tubes are tailored for critical uses in oil & gas, marine, chemical, petrochemical, and power plants due to their adaptability, corrosion resistance, and availability in both seamless and welded forms. Their broad range of diameters and lengths supports diverse project requirements.

Compliance & Availability

Conforming to global standards like ASTM A789/A790 and DIN EN 10216-5, Duplex Steel Tubes are ready for dispatch in standard export packaging. Available in various grades and finishes, they come in polished and pickled surfaces, ensuring rapid fulfillment and consistent quality.

FAQs of Duplex Steel Tube:

Q: How do Duplex Steel Tubes provide benefits in high-pressure and corrosive environments?

A: Duplex Steel Tubes offer excellent corrosion resistance and high-pressure ratings due to their unique metallurgical structure and polished or pickled surfaces. Their high mechanical strength, with minimum tensile strength of 620 MPa, makes them ideal for environments found in oil & gas, chemical plants, and marine industries.

Q: What is the typical process for manufacturing Duplex Steel Tubes?

A: Duplex Steel Tubes are manufactured either seamlessly or by welding. They are cold rolled or cold drawn to achieve precise dimensions and properties. After forming, they undergo solution annealing for optimal mechanical and corrosion-resistant characteristics, followed by surface treatment like polishing or pickling.

Q: When should I use a Duplex Steel Tube over conventional stainless steel?

A: Duplex Steel Tubes are recommended when both high mechanical strength and superior corrosion resistance are required, especially under high pressure or in aggressive environments such as offshore, petrochemical, and marine applications. Their dual-phase structure offers advantages over conventional austenitic stainless steels.

Q: Where can Duplex Steel Tubes be supplied and in what packaging?

A: These tubes are available in ready stock from manufacturers and suppliers in India, with efficient global export capability. They are packed in standard export packaging to ensure the materials integrity during transportation and handling.

Q: What range of sizes and grades are available for Duplex Steel Tubes?

A: Duplex Steel Tubes are available in outer diameters ranging from 6 mm to 630 mm, thicknesses between 0.5 mm to 20 mm, and lengths up to 12,000 mm. Offered grades include UNS S31803, S32205, 2205, and 2507, catering to varying project specifications and standards.

Q: How does the solution annealing process enhance Duplex Steel Tube performance?

A: Solution annealing refines the microstructure of Duplex Steel Tubes, enhancing both their mechanical properties and corrosion resistance. This heat treatment ensures the tubes exhibit uniform strength, ductility, and long-term performance in challenging operational settings.

Q: What are the typical end finishes provided for Duplex Steel Tubes?

A: Depending on application requirements, Duplex Steel Tubes are available with plain, beveled, or threaded ends, ensuring compatibility with various connection systems common in oil & gas, power, and marine installations.

Get Latest Price