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Difference Between Austenitic And Duplex Stainless Steel

What Is The Difference Between Stainless Steel And Duplex Steel?

Great Steel & Metals is recommended as the leading exporter and manufacturer with over 30 years of expertise in the pipe sector. Offshore industries, solvent industries, chemical industries, power plants, cement industries, refineries, oil & gas industries, and paper industries are our major customers. GSM is an ISO 9001:2015 certified and recognized brand in the pipe industry. GSM is known as a major manufacturer and supplier, from India to the Middle East and other countries, of ferrous and non-ferrous materials such as duplex and super duplex flanges and stainless steel seamless pipes, butt-weld fittings, steel materials, and engineering goods.

Difference Between Austenitic And Duplex Stainless Steel

Steel pipes are cylindrical steel tubes that are utilized in a variety of manufacturing and construction applications. They are the steel industry's most widely produced product. A pipe is mostly used to transfer liquid or gas underground, such as oil, gas, and water. Pipes of various sizes are employed in a variety of manufacturing and construction applications.

Stainless Steel Pipes

Stainless steel is a versatile material made up of a steel alloy and a small amount of chromium. The chromium adds to the material's corrosion resistance, which is what gave it its name. Stainless steel is commonly used in a wide range of applications, including pipeline and tubing manufacturing, since it is low-maintenance, oxidation resistant, and does not affect other metals it comes into contact with.

Stainless Steel Pipe

Stainless Steel Pipe

Stainless Steel Sheet

Stainless Steel Sheet

Stainless steel piping is divided into numerous types based on the pipe's intended application.

Stainless Steel Seamless Pipes, Plates, Fittings, and Tubing

In the construction and engineering industries, stainless steel pipe is one of the more standardized materials. Stainless steel seamless pipes are hollow steel bars that are used to transport fluids such as oil, gas, water, steam, heat exchangers, and mechanical machines. They are also commonly employed in the fabrication of mechanical parts and engineering constructions due to their bending, torsional strength, and reduced weight.

GSM Stainless Steel Seamless Pipes have exceptionally precise dimensions and can easily be employed in precision-required applications. Stainless steel seamless pipe can withstand high temperatures and maintain the purity of materials that come into direct contact with stainless steel. Chemical facilities, aviation fields, marine equipment, cryogenic transportation, medical, and architectural industries all employ stainless steel pipe and tubing.

SS Seamless Pipe

SS Seamless Pipe


Pipe fittings with beveled ends are known as butt-weld fittings. The end bevels allow for robust attachment at the joints. Pipes ranging in diameter from 1/2 inches to 48 inches can be used with the ASME B16.9 SS Butt-weld Fittings.

ASME B16.9 Pipe Fitting

ASME B16.9 Pipe Fitting


Stainless Steel Welded Pipes, Plates, Fittings, and Tubing

Welded pipe is formed by rolling a flat plate/skelp into a tubular shape and then welding it to complete the form. A seamless pipe that can be utilized in high temperature and pressure applications is ASTM A312 Stainless Steel Welded Pipe. It is stronger and has greater pressure ratings due to the electric resistance weld.

ASTM A312 Welded Pipe

ASTM A312 Welded Pipe

Duplex Pipes, Plates, Fittings, and Tubing

Duplex pipes are stainless steel pipes with a high chromium content and a low nickel content. Duplex is a metallurgic structure that has both austenitic and ferritic steel phases. The combination allows duplex steel to perform well in terms of strength and corrosion resistance. Due to its properties, duplex steel is highly sought after in heavy industries such as oil and gas, nuclear, and chemical processing.

Duplex Pipe

Duplex Pipe

Duplex Steel Plate

Duplex Steel Plate

The ASTM A790 Duplex Welded Pipe is a seamless pipe mostly used in high-temperature applications. As a result, depending on the standards, nature, pipe sizes, and pressure classes of the pipes used, the ASME SA790 Duplex Stainless Steel Tubing applications limit the time of exposure to high temperatures.

ASTM A790 Welded Pipe

ASTM A790 Welded Pipe

ANSI B16.9 Fittings

ANSI B16.9 Fittings

Duplex Fittings are durable and long-lasting, making them suitable for usage in the marine, food processing, and chemical industries. The ANSI B16.9 Duplex Steel Pipe Fittings come in sizes up to 48 inches in diameter. These corrosion-resistant components are utilized in a variety of applications.