Super Duplex Steel Pipes

Super duplex stainless steel pipes are alloyed with chromium and nickel and contain molybdenum, nitrogen and copper. These additions to the chemical composition of duplex steel pipes give them a higher tensile strength than other metals, such as mild or carbon steel. The primary benefit of super duplex steel pipes is the combination of properties from both ferritic and austenitic stainless steels, which are resistant to corrosion in saltwater, acids and chlorides. Super duplex stainless steel pipes also have higher heat resistance due to their duplex structure, making them a great choice for applications that require excellent mechanical properties with relatively low manufacturing costs.

The difference when comparing super duplex and duplex steel pipes is the higher molybdenum and chromium content in the former. The well-balanced dual-phased structure helps give these pipes a combination of strength and corrosion resistance. To make these steel pipes more cost-effective, they are alloyed with nickel and molybdenum in lower amounts. Chloride environments are not a problem for super duplex steels are they have effective chloride resistance. These pipes have more tensile and yield strength than austenitic or ferritic steel grades. Alteration in the thickness of the pipes is possible without compromising on quality and durability. Super Duplex pipes can withstand marine environments effectively. Hence, these pipes are used in offshore coastlines, fire-fighting systems, subsea coastlines, injection and ballast water systems, oil & gas industries, and oil & gas plants.

Super duplex steel pipes resist stress corrosion cracking (SCC) found in superalloys. Super duplex pipe offers a higher temperature, pressure and environmental stress resistance than a conventional duplex or super stainless steel, making it ideal for industrial applications. Furthermore, super duplex steel pipe price is relatively favourable compared to other high-end materials like superalloys, making it an attractive choice for those who need reliable performance on tight budgets.