Duplex steel pipes & tubes - Import export

Duplex UNS S31803/1.4462 is a duplex stainless steel with approximately 50% ferrite and 50% austenite. This grade has good mechanical strength at room temperature, resistant to corrosive attack, including pitting and is resistant to stress corrosion cracking. The grade is a successful alternative to the normal 300 series austenitic stainless steels, where its higher strength and resistance to stress corrosion cracking is required in critical applications. Please note that we have a minimum order value of £10,000.

The microstructures inside duplex stainless steels are approximately 50 per cent austenite and 50 per cent ferrite, and consequently duplex products share the physical properties of both ferritic and austenitic grades. Duplex stainless steels are resistant to the cracking caused by chloride stress corrosion in austenitic grades, and have improved resistance to localised corrosion. This family of stainless steels has roughly twice the yield strength of their counterpart austenitic grades . Higher hardness values provide better wear resistance for high precision tubes. Duplex stainless steel tubes have high hardness and wear resistance propertiesDuplex steels are easily welded and formed, similar to austenitic grades. Depending on chromium, nickel and molybdenum content, duplex stainless steels are divided into four main categories: lean duplex, duplex, super duplex and hyper duplex. Please note that we have a minimum order value of £10,000.

Our NORSOK-approved Super Duplex alloy 2507 tubes (UNS 32750) are custom-engineered for the most aggressive subsea and downhole oil and gas applications. Advantages include: NORSOK-approval Made to order in specialist non-standard sizes Superior strength and corrosion resistance Short lead times Small batch sizes With 80 years engineering expertise, we specialise in manufacturing corrosion resistant Super Duplex tubes for the increasing hostile temperature and operating environments. Greater Corrosion Resistance Than Standard Duplex Grades Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades. Please note that we have a minimum order value of £10,000.