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Duplex Stainless Steel Pipes

Duplex Stainless Steel Pipes Specification

Application
Oil & Gas, Petrochemical, Chemical Processing, Marine, Power Plant, Desalination

Surface Finish
Manual Polish

Product Type
Pipe / Tube

Alloy
Duplex / Super Duplex Alloy

Other Material
Super Duplex Stainless Steel Grades upon Request

Connection
Plain End, Beveled End, Threaded

End Protector
Plastic Caps

Material
Stainless Steel

Steel Grade
A

Type
Seamless / Welded

Shape
Round

Standard
ASTM, ASME, EN, DIN, JIS

Grade
ASTM A789, ASTM A790, EN 10216-5

Surface Treatment
Passivated, Pickled

Technique
Hot Rolled, Cold Drawn

Thickness
1 mm to 50 mm

Outer Diameter
6 mm to 630 mm

Length
Up to 12 meters or as required

Tolerance
0.5 mm or as per standard

Color
Metallic Silver/Grey

Operating Temperature Range
-50°C to 300°C

Packaging
Standard export seaworthy packing, Wooden Boxes, Bundles

Corrosion Resistance
Excellent to pitting and crevice corrosion

Yield Strength
450-620 MPa

Magnetic Properties
Slightly magnetic

Heat Treatment
Solution Annealed

Tensile Strength
620-880 MPa

Density
7.8 g/cm³

Elongation
>25%

Hardness
Rockwell C 28-35

Duplex Stainless Steel Pipes Trade Information

Minimum Order Quantity
500 Ten Gross

Supply Ability
10 Per Month

Delivery Time
1 Days

Main Export Market(s)
Asia, Australia, Central America, South America, Eastern Europe, North America, Western Europe, Middle East, Africa

Main Domestic Market
All India

About Duplex Stainless Steel Pipes

Duplex Stainless Steel Pipes have excellent corrosion resistance, particularly in aggressive environments such as seawater, acidic solutions, and chloride-containing environments. This makes them suitable for offshore, marine, and chemical processing applications. Duplex Stainless Steel Pipes exhibit high strength and superior toughness compared to other stainless steel grades. They can withstand high-pressure and high-stress conditions, making them suitable for applications in the oil and gas industry, chemical processing plants, and other demanding environments.

Superior Mechanical and Corrosion Properties

Duplex Stainless Steel Pipes stand out due to their balanced composition, providing high strength and exceptional resistance to various forms of corrosion, including pitting and crevice types. The robust mechanical properties, such as elevated yield and tensile strength combined with elongation above 25%, equip these pipes to perform reliably in demanding settings.

Versatile Applications Across Industries

These pipes are integral to sectors like oil & gas, petrochemical, marine, power generation, desalination, and chemical processing. Their adaptability for use across such a wide spectrum is supported by their compatibility with harsh environments, longevity, and variety in shapes, connection types, and surface finishes. This versatility allows for tailored solutions to meet diverse industry needs.

Packaging, Finish, and Compliance for Export

Duplex Stainless Steel Pipes are packaged in seaworthy wooden boxes or bundles to ensure secure transit. Each pipe is manually polished, passivated, and pickled for optimal surface quality. The products adhere to global standards including ASTM and EN, and are available in hot rolled, cold drawn, or custom-finished forms, supporting extensive export and supply chains.

FAQ's of Duplex Stainless Steel Pipes:

Q: How are Duplex Stainless Steel Pipes manufactured to ensure strength and corrosion resistance?

A: Duplex Stainless Steel Pipes undergo solution annealing, which enhances their mechanical strength and corrosion resistance. The use of high-quality Duplex or Super Duplex alloys, coupled with rigorous surface treatments such as pickling and passivation, ensures that the pipes meet demanding industry standards and resist pitting and crevice corrosion.

Q: What industries benefit most from using Duplex Stainless Steel Pipes?

A: These pipes are extensively used in oil & gas, petrochemical, chemical processing, marine, power generation, and desalination industries. Their ability to withstand aggressive environments and high pressure makes them a preferred choice for critical applications in these sectors.

Q: When is it advisable to choose Duplex over traditional stainless steel pipes?

A: Choosing Duplex Stainless Steel Pipes is advisable when applications require a combination of high strength, superior corrosion resistance, and excellent performance in temperature ranges from -50C to 300C. They are ideal where chloride-induced corrosion or high mechanical loads are concerns.

Q: Where can Duplex Stainless Steel Pipes be sourced in India?

A: Duplex Stainless Steel Pipes can be sourced from reputable dealers, exporters, manufacturers, importers, suppliers, traders, and wholesalers across India. Many offer customization, prompt delivery, and compliance with international standards.

Q: What is the process for ensuring quality and compliance in these pipes?

A: Quality and compliance are maintained through adherence to standards like ASTM, ASME, EN, DIN, and JIS. Each pipe is subject to material certification, precise tolerance checks (0.5 mm or as per standard), manual polishing, and thorough packaging. Custom grades and dimensions can be requested for specific project requirements.

Q: How should Duplex Stainless Steel Pipes be installed for maximum longevity?

A: For optimal durability, installation should follow manufacturer guidelines, ensuring proper alignment, compatible connections (plain, beveled, or threaded), and the use of end protectors like plastic caps. Surface treatments and appropriate joining methods increase longevity, especially in corrosive environments.

Q: What are the main benefits of using Duplex Stainless Steel Pipes for industrial projects?

A: The primary benefits include high strength-to-weight ratio, outstanding resistance to various types of corrosion, longevity under harsh conditions, wide operating temperature range, and flexibility in customization. This results in reduced maintenance costs and improved service life in demanding industrial applications.