S31803/ S32205, S32750, S32760 Duplex Stainless Steel Seamless pipe/ Tube
Published:2015-12-28 16:08:15    Text Size:【BIG】【MEDIUM】【SMALL
Summary:Duplex Steel Duplex Stainless Steel Product Description: Main grades: UNS S31803/S32205, S32750, S32760 ASTMA789, ASTMA790. GB/T21833-2008, EN 10216-5, EN 10216-7

Product Name:Duplex Stainless Steel, Duplex Steel
Product Description: Main grades: UNS S31803, S32205, S32750, S32760
ASTMA789,ASTMA790. GB/T21833-2008, EN 10216-5, EN 10216-7



Supply: Suplex Steel seamless pipe,  Suplex Steel Pipe Fittings, Suplex Steel Flanges


  • Product Description
  • (Super) Duplex Stainless Steel

    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 good corrosion resistance and high strength. It is alloyed with 18%-28% Cr and 3%-10% Ni in the condition of low C. Some steels also contain the alloy elements such as Mo, Cu, Nb, Ti and N, etc. Comparing with ferritic stainless, duplex stainless steel has higher plasticity, ductility and better intergranular corrosion resistance and weldability. It keeps same 475℃ brittleness with ferritic stainless and high thermal conductivity. Duplex has improved yield strength, resistance to intergranular corrosion, stress corrosion, corrosion fatigue and abrasion & corrosion compared with austenitic stainless steel.

    Grades:S31803/S32205, S32750, S32760, S31500, 32001, S32003, S32304


    ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

    ASTM A790 (ASME SA790) Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

    ASTM A928 (ASME SA928) Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal

    GB/T 21832-2008 Austenitic--Ferritic(duplex) grade stainless steel welded tubes and pipes

    GB/T 21833-2008 Austenitic-Ferritic (duplex) grade stainlee steel seamless tubes and pipes


    1.Superior resistance to general and local corrosion, especially to stress corrosion, pitting corrosion, crevice corrosion, corrosion fatigue and abrasion & corrosion.

    2.Good weldability

    3.Good mechanical properties

    4.Excellent intergranular corrosion resistance

    5.High cost-effectiveness, long life time


    Comparison Table of Pitting Corrosion Test for Junyue 2507 Duplex Tube

    Mechanical Properties at RT of Junyue 2507 Duplex Tube in Φ25mm x 2mm




World Steel Asia Co., LTD

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Produce: Austenite & Duplex Steel & Alloy Steel/ Stainless Steel Seamless Pipe-Tube and Sanitary Stainless Steel Weld Pipe and Stainless Steel Butt weld Pipe Fitting ASTM A403 and Stainless Steel Flange ASTM A182/  ASTM SB677 904L UNS N08904, EN 1.4539 Stainless Steel Pipe/ Duplex Steel Pipe UNS S31803 S32205 S32750/ Alloy Steel Pipe/ Seamless Stainless Steel Mechanical Tube/ Stainless Steel Square Tubes Grade TP304, TP304L, TP321, TP316, TP316L, TP316Ti, TP317L, TP347, TP347H, TP309S, TP310S, TP314, S31803, S32750, UNSN08904, Inconel600, Inconel601, Inconel625, Incoloy800, Incoloy800H, Incoloy825, Monel 400, Ni200,EN10216-5 EN1.4301, 1.4306, 1.4541, 1.4401, 1.4404, 1.4571, 1.4438, 1.4550, 1.4833, 1.4845, 1.4841, 1.4462, 1.4410, 1.4539, 1.4876, 1.4959, 1.4958.  Http://
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