duplex pipe

duplex pipe Product Description: Duplex stainless steel tubes & 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 & pipes are applied to heat exchangers in refinery industries, petrochemical plants, paper & pulp industries, sugar & beverage industries. Standards: ASTM/ASME A789/SA789, A790/SA790 Grade: UNS S32750, S31803, etc.Chemical CompositionGradeCmaxSimaxMnmaxPmaxSmaxCrNiMoNCuS327500.0300.81.20.0300.01524.0-26.06.0-8.03.0-5.00.24-0.320.5maxS318030.0301.02.00.0300.02021.0-23.04.50-6.502.50-3.500.08-0.20Physical PropertiesGradeY.S.MPa minT.S.Mpa minElongation%HardnessHRCS327505508001531S318034506202531 Marking: JW, material grade, standard, specification, heat no.Length: unbending length or fix lengthPackage: knitting strip bundle, wooden box or steel boxMill test certificate: according to EN 10204 3.1B Value added service Third party inspection Bright annealed, polished outside and inside surface