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Duplex UNS S31803 / S32205

Stainalloy is highly experienced in the supply of Duplex UNS S31803 / S32205 piping materials. For over 25 years Stainalloy has been dealing with Duplex and has gained unmatched technical know-how and excellent relationships with the leading manufacturers.

Duplex UNS S31803 / S32205 is an austenitic-ferritic stainless steel used for corrosive environments and is capable to resist localized corrosion such as pitting, crevice corrosion and stress corrosion cracking. The austenitic-ferritic chemical composition results in mechanical properties that are able to cope with high stress conditions where to use of ordinary austenitic stainless steel will result in mechanical failure.

Stainalloy supplies, worldwide, large sized Duplex piping packages required for green field construction developments and services also medium-small Duplex UNS S31803 / S32205 piping packages from stock during the advanced construction stages when short lead times are required. Duplex UNS S31803 / S32205 is used for upstream production of high chloride oil & gas fluids, water treatment processing modules, and paper & pulp processing.

The stock program consists of seamless & welded pipes, seamless & welded fittings, forgings & forged flanges starting from 0,5” up to and including 24”. The Duplex UNS S31803 / S32205 stocks of Stainalloy are manufactured in accordance with ASTM requirements: seamless pipe ASTM A790 UNS S31803 / S32205, welded pipe ASTM A928 UNS S31803 / S32205, seamless & welded fittings ASTM A815 UNS S31803 / S32205 and forgings & forged flanges ASTM A182 F51 UNS S31803 / F60 UNS S32205.

Our clients benefit of a Duplex stock program that is subjected to the most stringent test requirements exceeding Norsok M630 and Shell MESC specifications. All Super Duplex stocks are manufactured exclusively by Norsok M650 approved European mills. The stock program of Stainalloy is in particular of use to clients executing construction projects related to the upstream oil & gas and water treatment industries.