Duplex Steel Products

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Kalpataru Piping Solutions specializes in Duplex Steel Products, including Duplex Stainless Steel, S32750, and S32760. We manufacture and export Duplex Steel Products using high-quality raw materials. Our offerings, such as A790 Duplex Steel S32950 Seamless Pipes, are known for their high strength, excellent workability, and weldability. We serve a wide range of international markets, including the USA, UK, UAE, and many European countries.

Duplex steels, named for their dual-phase structure of austenite and ferrite in nearly equal proportions, offer exceptional mechanical properties,duplex steel composition and corrosion resistance. These steels excel in their as-cast and as-welded states, making them ideal for applications requiring strong resistance to stress corrosion cracking and various environmental conditions.

Duplex Steel Products are renowned for their immense hardness, making them the top choice for applications requiring exceptional strength. Duplex Stainless Steels are known as “duplex” because of their two-phase microstructure, which includes grains of ferritic and austenitic stainless steel. This unique structure offers a remarkable combination of benefits.

Duplex Steel is approximately twice as strong as regular austenitic or ferritic stainless steel. It is highly corrosion-resistant and has superior toughness and ductility compared to ferritic grades. These qualities make it ideal for use in challenging environments where durability and reliability are crucial.

As a leading duplex stainless steel manufacturer in India, we are committed to ensuring the highest standards for the physical and mechanical properties of our products. Our range includes Duplex Stainless Steel, Duplex Steel, Duplex Pipe, Fittings, and Flanges. Each product is meticulously crafted to meet stringent quality requirements, making them suitable for a variety of industrial applications.

Types of Duplex Steel product

Duplex Steel Supply Conditions

• Strength – Duplex stainless steels are about twice as strong as normal austenitic or ferritic stainless steels.
• Toughness and Ductility – These steels offer superior toughness and flexibility compared to ferritic grades, though they don’t match the properties of austenitic grades.
• Corrosion Resistance – Like all stainless steels, duplex stainless steels are highly resistant to corrosion. Their resistance to chloride pitting and crevice corrosion depends on the chromium, molybdenum, and nitrogen content in the alloy. Duplex stainless steel grades offer a range of corrosion resistance similar to that of austenitic stainless steel grades.
• Stress Corrosion Cracking Resistance – Duplex stainless steels excel in resisting stress corrosion cracking (SCC), a characteristic inherited from the ferritic side. SCC can pose a challenge for standard austenitic types like 304 and 316, especially in the presence of chlorides, humidity, or high temperatures.
• Cost – Duplex stainless steels contain lower amounts of nickel and molybdenum compared to equally corrosion-resistant austenitic stainless steels, making them more cost-effective. The higher yield strength of duplex stainless steel often allows for thinner sections, leading to significant cost and weight savings compared to austenitic stainless steel solutions.

Duplex Steel Specifications

Duplex Steel Grades

Mechanical Properties of Duplex Steel

Physical Properties of Duplex Stainless Steel

Duplex Stainless Steel Applications

1. Structural Design Components : Duplex stainless steel is widely used in structural design components due to its high strength and durability, which allow for more robust and reliable constructions.
2. Storage and Exchange Equipment (High Pressure, Saline Applications) : Its excellent corrosion resistance makes duplex stainless steel ideal for storage and exchange equipment, especially in high-pressure and saline environments.
3. Heat Exchanger : In heat exchangers, duplex stainless steel’s ability to withstand high temperatures and corrosive conditions ensures efficient and long-lasting performance.
4. Aerospace, Pulp, and Paper Industry : The aerospace, pulp, and paper industries benefit from duplex stainless steel’s combination of strength, corrosion resistance, and lightweight properties, making it suitable for a variety of demanding applications.
5. Two-Phase Microstructure : Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of phases of ferritic and austenitic stainless steel. This unique structure provides a set of benefits that make duplex stainless steel highly versatile and effective in various applications.
6. Heat Treatment – Solution Annealed : Duplex stainless steel undergoes heat treatment through solution annealing, which helps achieve the desired mechanical properties and microstructure, ensuring optimal performance in its applications.

We Export To

New Zealand, Ukraine, Brazil, Azerbaijan, Angola, United Kingdom, Philippines, Oman, France, Algeria, Macau, Sri Lanka, Tibet, Norway, Mexico, Venezuela, Denmark, Russia, Bhutan, Estonia, Austria, Vietnam, Argentina, Turkey, Greece, Romania, Bahrain, Bangladesh, Afghanistan, Italy, Poland, Zimbabwe, Thailand, India, Kenya, Ecuador, Puerto Rico, Nepal, Malaysia, Bulgaria, Libya, Slovakia, Chile, Serbia, Australia, Poland, Iran, Costa Rica, Peru, South Korea, Iraq, Iran, Indonesia, Spain, Trinidad & Tobago, Tunisia, Qatar, Japan, Canada, Taiwan, Yemen, Mongolia, Czech Republic, Israel, Ghana, Egypt, Nigeria, Saudi Arabia, United Arab Emirates, Namibia, Hungary, South Africa, Hong Kong, Croatia, Colombia, Lebanon, Nigeria, Portugal, Finland, Pakistan, Jordan, Sweden, Belgium, Gambia, Lithuania, United States, Chile, Bolivia, Germany, Singapore, Ireland, Gabon, Kuwait, Switzerland, Mexico, Belarus, Kazakhstan, Morocco, China, Netherlands, Germany, Belgium, Italy, Turkey, Denmark and UK.

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