Duplex stainless steel is called "duplex" because it has a two-phase microstructure of roughly 50% austenitic and 50% ferritic stainless steel. Duplex stainless steels have significantly better strength and ductility than regular austenitic stainless steels. It's possible to reduce the section thickness of duplex stainless steel and lead to significant cost and weight savings compared to a solution in austenitic stainless steels.
In recent years, it has found that, although austenitic steel is resistant against most corrosive media, its corrosion resistance against some special media is not as good as expected. In this circumstance, duplex stainless steel is a better choice. NFF can provide duplex stainless steel pipe fittings for applications like marine drilling platforms and chemical factory projects.
ASTM A182 F51, ASTM A182 F60, ASTM A182 F53, ASTM A182 F55
ASTM A182 UNS S31803, ASTM A182 UNS S32205, ASTM A182 UNS S32750, ASTM A182 UNS S32760
NFF has focused on the manufacturing of steel high pressure pipe fittings for nearly 30 years and has served global clients from different backgrounds like petroleum, chemical, electrical, papermaking, marine project industries. With rich production experience, strong manufacturing capacities, strict quality management system, NFF is able to provide you with standard butt weld pipe fittings, socket weld pipe fittings, thread pipe fittings as well as customized pipe fittings.