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October 7, 2023

A Comprehensive Guide to Duplex Steel Pipes: Pricing and Specifications


Duplex steel pipes are a critical component in various industrial applications, renowned for their exceptional properties and versatile use. Combining the best attributes of austenitic and ferritic stainless steels, duplex steel offers high strength, excellent corrosion resistance, and improved weldability. This article aims to provide valuable insights into the pricing and specifications of duplex steel pipes.

Understanding Duplex Steel

Duplex stainless steels are a family of stainless steels characterized by a two-phase microstructure—austenitic and ferritic—hence the name "duplex." This unique structure grants them a robust combination of mechanical and corrosion resistance properties. Price List Duplex Steel Pipes Typically, duplex stainless steels contain about 22-26% chromium, 4.5-6.5% nickel, and 3-4% molybdenum, making them ideal for demanding applications.

Key Features and Benefits

  1. Corrosion Resistance: Duplex steel pipes offer superior corrosion resistance, especially in environments where standard austenitic grades might struggle.
  2. High Strength: They have higher tensile and yield strength compared to austenitic and ferritic stainless steels.
  3. Good Weldability: Duplex steels are readily weldable, allowing for easy fabrication and installation.
  4. Cost-Effective: Considering their superior properties, duplex steel pipes are cost-effective in the long run, providing a balance between price and performance.

Specifications of Duplex Steel Pipes

Duplex steel pipes are available in various grades and specifications, each catering to specific applications.Duplex fasteners Some popular grades include:

  1. Duplex 2205 (UNS S31803/S32205): This grade is widely used due to its excellent corrosion resistance and high strength.
  2. Duplex 2507 (UNS S32750): Known for its enhanced resistance to chloride stress corrosion cracking and high thermal conductivity.
  3. Duplex 2304 (UNS S32304): This grade offers good strength and resistance to localized corrosion.

Factors Influencing Duplex Steel Pipe Pricing

Several factors influence the pricing of duplex steel pipes, including:

  1. Grade and Composition: Different grades have varying compositions, affecting the overall cost.
  2. Size and Dimensions: Larger-diameter and thicker-walled pipes usually cost more due to increased material requirements and manufacturing complexity.
  3. Manufacturing Process: The method used to manufacture the pipes, whether seamless or welded, impacts the final cost.
  4. Market Demand and Supply: Market dynamics, including demand and supply fluctuations, can affect pricing.
  5. Supplier and Location: The supplier's reputation, location, and market competition play a role in determining prices.


Duplex steel pipes are a preferred choice for industries demanding high corrosion resistance and strength. Understanding the specifications and factors influencing pricing is essential when considering these pipes for specific applications. It's advisable to work with reputable suppliers who can guide you in choosing the right grade and size of duplex steel pipes that align with your project requirements. Always prioritize quality and suitability to ensure optimal performance and cost-efficiency in your projects.