United Stainless LLP is one of the Duplex Steel Coil Manufacturers in India that produces exceptionally strong coils with outstanding corrosion resistance and long life span. Our duplex steel coils are produced to the strict industrial needs where the durability, dimensional accuracy, and stability performance are paramount. We serve both the local and the foreign markets with confidence due to high quality production and high standards.
Overview of Duplex Steel Coil
Duplex steel coils are made of a unique kind of stainless steel that possesses a dual-phase microstructure of austenite and ferrite normally in a 50:50 ratio. This special structure is a combination of the most favorable characteristics of both stages, it has higher mechanical strength than austenitic stainless steels and has a better corrosion resistance than ferritic grades.
Duplex steel coils are extensively utilized in those settings that are vulnerable to chlorides, moisture, chemicals and excessive mechanical stress. Their high stress corrosion cracking resistance is exceedingly suitable in their industrial and marine applications that are demanding.
Key Material Properties
The duplex steel coils offer the best combination of strength, corrosion resistance and cost-effectiveness over the traditional stainless steels.
Key material properties include:
- High yield and tensile strength
- Excellent resistance to pitting and crevice corrosion
- Superior resistance to stress corrosion cracking
- Good weldability with proper procedures
- High fatigue strength
- Good performance in chloride-rich environments
- Long service life with reduced maintenance
The characteristics of duplex steel coils ensure their suitability for heavy-duty, high-pressure, and corrosive service conditions.
Material Specifications
- Thickness Range: 0.5 mm to 8.0 mm
- Width: Up to 2000 mm (custom widths available)
- Standards: ASTM A240, ASTM A480, EN 10088, UNS
- Grades: UNS S31803, S32205 (2205), S32750, S32760
- Surface Finish: 2B, BA, No.1, No.4
- Condition: Hot Rolled (HR), Cold Rolled (CR)
- Edge: Mill edge, slit edge
All duplex steel coils are manufactured as per the international mechanical and chemical standards.
Industrial Applications
Duplex steel coils find extensive application in industries that have high strength and superior corrosion. Its typical uses are oil and gas pipelines, heat exchangers, pressure vessels, storage tanks, chemical processing equipment, desalination plants, marine structures, offshore platforms, pulp and paper machinery and power generation systems.
Duplex steel coils are very desirable in the marine, petrochemical and industrial fabrications industry due to their high performance in harsh environments in terms of the safety, durability, and reliability of the industry.
Manufacturing Excellence
We are a reputable Duplex Steel Coil Manufacturer and, therefore, we pay attention to the correct chemical composition, control over the rolling process, and stability of the microstructure balance. High-tech production processes help to provide high-quality of surfaces, consistency of thickness, and a stable mechanical behavior.
Any duplex steel coil is high quality checked and the chemical studies, mechanical tests, ultrasonic tests and dimensional check are performed to ascertain the global standards.
Supply and Distribution Network
The intensive supply chain is a key to continuous industrial processes. We are a trusted Duplex Steel Coil Supplier in India and therefore guarantee that we deliver our products on time to industries like oil and gas, chemical processing, marine, power generation, and heavy engineering.
The other services are Material Test Certificates (MTC), custom slitting, coil cutting, surface finishing, and technical assistance and advice of the professionals to assist the customers on the appropriate grade to use in particular applications.
Conclusion
Duplex steel coils remain crucial in the industry that requires a lot of strength, corrosion-resistance, and durability. They are a perfect fit in the contemporary engineering and industry with their better mechanical characteristics and ability to withstand extreme conditions. The collaboration with a reliable manufacturer and Duplex Steel Coil Supplier guarantees stability in the quality and efficiency of operations and a long lifespan.
Frequently Asked Questions
Duplex steel coils offer high strength, excellent corrosion resistance, resistance to stress corrosion cracking, good weldability, and long service life.
Common grades include UNS S31803, S32205 (2205), S32750, and S32760, depending on strength and corrosion resistance requirements.
They are widely used in oil and gas, chemical processing, marine, offshore structures, power plants, and desalination systems.