2205 is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength.

The standard S31803 composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S32205 in 1996.

S32205 gives better guaranteed corrosion resistance, but much of the S31803 currently produced also complies with S32205. 

Due to its excellent corrosion resistance, 2205 is a suitable material for service in environments containing chlorides and hydrogen sulfide. It is also suitable foe use in dilute sulfuric acid solutions and for handling organic acids, i.e., acetic acid and its mixtures.
1,Oil and Gas Production – Down-hole piping, gathering line pipe, CO2 tertiary recovery piping, oil-gas separators, heat exchangers.
2,Chemical Processing – Heat exchangers, pressure vessels, tanks, columns, pumps, valves, piping.
3,Transportation – Tank trailers, ocean-going tankers, barges.
4,Pulp & Paper – Pulp digesters
5,Power Industry – Feedwater heaters, coolers, flue gas scrubbers.
6,Marine Service – Sea water piping, pumps.

We are a well known worldwide supply and export Duplex stainless steels in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.