Stainless steel duplex 2205 pipes

Duplex 2205 pipe and Super duplex pipe are our strength product. Duplex steel is an austenite-ferrite dual phase stainless steel, it is developed for applications that demand high strength and corrosion resistance. Duplex stainless steel pipe is a cost effective solution for many applications where the 300 series stainless steel pipe are susceptible to chloride stress corrosion cracking. Duplex 2205 and super duplex 2507 stainless steel pipe is an idea choice for the applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. We supply duplex 2205 (S31803) and super duplex 2507 (S32750) pipe and tube according to ASTM A790, ASTM A789, EN 10216-5 etc.

duplex pipe

What is Duplex Stainless Steel:

Duplex Stainless Steel (DSS) including duplex 2205(S31803) and super duplex, they are commonly consist of 50% ferrite and 50% austenite, and generally requires not less than 30%. Duplex stainless steel has good welding performance and high strength. Compared with austenitic stainless steel, it is about double yield strength from stainless steel 316, 317 etc., it make the equipment lighter and stronger. Duplex steel has very good resistance to localized corrosion and stress corrosion cracking. Duplex steel is not intended to be used at temperatures above 300°C due to embrittlement, the continuous use temperature is from -50 to 250 °C.