Multi Metals India is the premier manufacturer and global exporter of high-performance piping solutions for demanding industrial environments. Duplex Steel S31803 (UNS S31803) is a specialized nitrogen-enhanced alloy engineered with a balanced 50:50 dual microstructure of austenitic and ferritic stainless steel. The peculiar metallurgical arrangement enables these grades to achieve a yield strength double that of standard austenitic grades, with excellent resistance to localized attack such as pitting, crevice corrosion and erosion. To achieve long term asset reliability, decreased structural downtime and perfect join integrity, today’s procurement managers and engineering teams charged with protecting heavy load fluid transport networks against hostile process media need look no farther than to a dedicated Duplex Steel Pipes Manufacturer.
High quality S31803 Seamless Piping is precisely manufactured in strict compliance with global technical standards like ASTM A790 and ASME SA790 standards to provide perfect field operations against harsh mechanical loads. This sophisticated chemical composition uses a powerful combination of chromium, molybdenum and nitrogen to provide a highly stable barrier against stress corrosion cracking (SCC) caused by chlorides. Due to their strong grain structure these lines are safe for high pressure fittings and rigorous chemical cycles but are expressly limited for lengthy service in extreme cold conditions or prolonged temperatures above 300°C to avoid material embrittlement.

























