Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

   Material: 2205,UNS S31803(Cr22Ni5Mo3);UNS S31500(Cr18NiMo3Si2);

   UNS S32900(Cr25Ni5Mo2);UNS S31260(Cr25Ni7Mo3);UNS S32750(Cr25Ni7Mo4)

   UNS S32550(Cr25Ni6Mo3);UNS No8800

Duplex stainless steel tubes and pipes are with high mechanical strength, good   elongation and weld ability which needs no pre-heating before welding and heat treatment after welding, low thermal expansion, excellent resistance to stress corrosion cracking, pitting and crevice corrosion, and high resistance to general corrosion in different environments. Duplex stainless steel tubes and pipes are applied to heat exchangers in refinery industries, petrochemical plants, paper and pulp industries, sugar and beverage industries.