Super Duplex Stainless Steel Pipe

  Super duplex stainless steel pipe is used in heat exchangers and cold showers and equipment such as refining, fertilizer, paper, petroleum, chemical and other seawater resistant high temperature concentrated nitric acid.

  Size of super duplex stainless steel pipe: OD 6mm-630mm or customized; Thickness 0.4-30mm or customized; Molybdenum-containing duplex stainless steel has good pitting resistance. The duplex pitting potential of the duplex stainless steel is similar to that of the austenitic stainless steel when it has the same pitting resistance equivalent value (PRE=Cr%+3.3Mo%+16N%). The comprehensive mechanical properties are good. It has high strength and fatigue strength, and its yield strength is twice that of 18-8 austenitic stainless steel.

Super Duplex Stainless Steel Pipe

  Compared with austenitic stainless steel, it has a large thermal conductivity and a small coefficient of linear expansion, and is suitable for use as a lining for equipment and for producing composite panels. Generally, 18-8 type austenitic stainless steel is prone to stress corrosion cracking in neutral chloride solution above 60 °C, and heat exchangers, evaporators, etc. made of such stainless steel in industrial medium of trace chloride and hydrogen sulfide. Also suitable for making heat exchanger dies, heat transfer efficiency is higher than austenitic stainless steel.

  Super duplex stainless steel pipe has good corrosion fatigue and wear corrosion resistance. It is suitable for making power equipment such as pumps and valves under certain corrosive media conditions.

  (4) The elongation in the solid solution state is 25%, and the toughness value AK (V-notch) is above 100J. When the tube and the plate are subjected to deformation, large stress is required to deform. There are still various brittleness tendencies of high-chromium ferritic stainless steel, which should not be used in working conditions above 300 °C.

  Requirements for any duplex stainless steel pipe please feel free to contact with Jaway Steel, Contact sales:Ms.Wendy.


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