Neonox Steel owned a position of leading manufacturer and exporter of Duplex Steel UNS S311303 Circle amongst our [AYES MOOS P808018 patrons. Duplex Steel DNS 531803 Dings has goad sande stress corrosion resistance. It has excellent resistance to stress corrosion cracking. The strengths of duplex stainless steels can in some cases be double that of austenitic stainless steels. There are used in oil and gas exploration and processing equipment – piping, tubing, a. heat exchangers. Solution heat treatment shoo. he .rformed in the range of 1030 Degree to 1100 Degree followed by rapid cooling. Moreover, a team DUPLE, SEEL PROMMR of our quality controllers perform a series of quality tests on the entire array at the time of procurement. We also offer these products in custom. built specificatIons.