What is super duplex pipe?

In technical terms, Super Duplex pipes are made from a form of austenitic-ferritic stainless steel, based upon iron with alloying additions of chromium, nickel and molybdenum. As such, Super Duplex pipes are pipes made out of this material. Super duplex pipes combine the features of ferritic steel and of austenitic steel. This means this material possesses high strength from the ferritic structure and high corrosion resistance from the austenitic structure, plus the ability to resist stress corrosion cracking. They have good toughness, are readily available and more competitively priced than other corrosion resistant metals that use higher contents of expensive alloying additions.  

Super Duplex Pipe Production

Super Duplex Seamless Pipe is commonly produced in a single piece by the extrusion process. This ensures excellent surface finish, dimensional accuracy and consistency of properties of every piece we supply to our clients.

The superior combination of strength and corrosion resistance achieved by super duplex stainless steels makes them an ideal choice for piping, flanges and fittings.

A wide range of scheduled sizes are available as seamless tubes, whilst heavy walled pipes and much larger diameter pipes can be produced from plate with a single longitudinal seam weld. By making use of our mill partnerships we can offer very competitive prices on duplex and super duplex pipe and tube, up to 8” outside diameter as seamless. In addition to this, we can either produce in-house, or source a complementary range of flanges and fittings to complete a project package. 

At Langley Alloys, we are fully dedicated to providing our clients with only the highest quality alloys – in whatever way they wish. 

Got any more questions? Get in Touch

If you have any more questions about austenitic or duplex stainless steels, please contact us today. A member of our team will be more than happy to help and can also advise you on the best option for your application.