Duplex Steel Plates with Superior Fatigue & Impact Resistance

United Stainless LLP is one of the major Duplex Steel Plates Manufacturers in India, which offers high quality of plates with great strength, high resistance to corrosion and long life at service. Our duplex steel plates are designed to work under the most demanding industrial conditions with durability, reliability and accuracy being paramount. We have stringent quality control procedures and adherence to international standards to ensure that all duplex steel plates have uniform performance requirements in the global application.

Overview of Duplex Steel Plates

Duplex steel plates are flat-rolled products manufactured from duplex stainless steel, which features a dual-phase microstructure of approximately equal parts austenite and ferrite. This unique structure provides a balanced combination of high mechanical strength and exceptional resistance to corrosion.

Duplex steel plates are widely used in industries that require materials capable of withstanding high pressure, aggressive chemicals, and harsh environmental conditions. They are available in multiple grades, thicknesses, and finishes to meet diverse industrial requirements.

Key Material Properties

Duplex steel plates offer mechanical and chemical advantages that surpass conventional austenitic stainless steels.

Key properties include:

• High yield and tensile strength
  
• Excellent resistance to pitting and crevice corrosion
  
• Superior resistance to stress corrosion cracking (SCC)
  
• Good weldability with proper procedures
  
• High fatigue and impact strength
  
• Better thermal conductivity and lower thermal expansion
  

Duplex steel plates are the best in heavy-duty and safety-critical applications because of these properties.

Material Specifications

• Thickness Range: 3 mm to 100 mm (custom thickness available)
  
• Width: Up to 2500 mm
  
• Length: Up to 12000 mm (custom cut sizes available)
  
• Standards: ASTM A240, ASTM A790, ASTM A182, EN 10088
  
• Grades: Duplex 2205 (UNS S32205/S31803), Super Duplex 2507 (UNS S32750), UNS S32760
  
• Surface Finish: 2B, BA, No.1, polished, pickled
  
• Condition: Hot rolled, cold rolled, solution annealed
  

These specifications ensure compliance with stringent mechanical, chemical, and dimensional requirements.

Industrial Applications

Duplex steel plates are widely used in industries where high strength and corrosion resistance are essential.

Common applications include:

• Oil & gas pipelines, pressure vessels, and separators
  
• Chemical processing tanks, reactors, and heat exchangers
  
• Marine structures, shipbuilding, and desalination plants
  
• Power generation equipment and flue gas systems
  
• Pulp and paper processing units
  
• Structural components in bridges and offshore platforms
  

Their ability to withstand extreme conditions makes them indispensable in critical industrial sectors.

Manufacturing Excellence

Being a reliable Duplex Steel Plates Manufacturer, we pay attention to accurate production, regulated chemical composition, and homogeneity of mechanical characteristics. The latest rolling technology, heat treatment, and strict testing can provide the best quality standards.

Each duplex steel plate undergoes comprehensive inspection, including chemical analysis, mechanical testing, ultrasonic testing, and surface inspection, ensuring defect-free material and consistent performance.

The Indian manufacturers are internationally known to be of high infrastructure, highly skilled labor force, and are also very strict to international quality expectations.

Supply and Distribution Network

An effective and efficient supply chain is vital to the continuous running of the industries. We are a reliable Duplex Steel Plates Supplier in India and guarantee our delivery promptly to various oil and gas industries, marine industries, chemical industries, power generation industries, and heavy engineering industries.

Value-added services include:

• Mill test certificates (MTC)
  
• Custom cutting and sizing
  
• Technical consultation and grade selection
  
• Export-quality packaging
  

Conclusion

Duplex steel plates continue to be a preferred material for industries that demand high strength, corrosion resistance, and long-term performance. Their application across oil & gas, marine, chemical, power, and structural sectors highlights their versatility and reliability.

By joining forces with an established manufacturer and Duplex Steel Plates Supplier, it will be possible to receive high-quality duplex steel plates that ensure a stable performance, safety, and long life in the harshest conditions.