Grades
S31500
S31803/S32250(双牌号)
S32003
S32304
S32101
S32201
S32750
S32760
Duplex stainless steel (DSS) is featured with structure of two phases (α and γ) and has characteristics of both ferritic and austenitic stainless steel. It has best corrosion resistance and high strength. In general, when the content of C is low, the content of Cr and Ni ranges from 18% to 28% and 3% to 10% respectively. Some steels also contain the alloy elements such as Mo, Cu, Nb, Ti and N, etc.
Product Center
S31500
S31803/S32250(双牌号)
S32003
S32304
S32101
S32201
S32750
S32760
01
ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe for General Service
ASTM A790 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe for General Service
ASTM A928 Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
02
ASME SA789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASME SA790 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASME SA928 Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
03
GB/T 21833 Austenitic - Ferritic (Duplex) Grade Stainless Steel Seamless Tubes and Pipes
GB/T 21832 Austenitic - Ferritic (Duplex) Grade Stainless Steel Welded Tubes and Pipes
Good weldability
Excellent corrosion resistance
Good mechanical properties
Excellent intergranular corrosion resistance
long life time
Petrochemical industry: Oil and gas industry pipelines, piping, heat exchanger tubes; industrial pipelines such as phosphoric acid and sulfuric acid.
Marine environment: Offshore platform pipeline tubes, seawater condenser pipes, underwater umbilical cables, fire fighting system pipes, desalination equipment pipes, etc.