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JF Engineering Products LLP

Duplex 2205 pipe | UNS S31803 Pipe

We stock large quantities of the Duplex stainless steel pipe at all time in our stock house. We supply the material to all big and small parties at any time they need. We export the Duplex stainless steel pipe to all parts of the world. Our wide network and very good contact with supply chain managers enable us to deliver our products at any part of the globe. We provide a wide range of dimensions for the Duplex stainless steel pipe and pipes so that they can fit to any size and shapes.

We are leading Duplex stainless steel pipe suppliers in the industry. We export Duplex stainless steel pipes and pipes to all parts of the world. Our duplex steel pipes and tubes are fabricated from the high quality raw materials. Hence they are very much durable

Called Duplex Pipe because of its mixed microstructure with about equal proportions of ferrite and austenite, duplex stainless steels are a family of grades, which range in corrosion performance depending on their alloy content. The chemical composition based on high contents of Cr and Mo, improves intergranular and pitting corrosion resistance, respectively. Additions of nitrogen can promote structural hardening by interstitial solid solution mechanism, which raises the yield strength and ultimate strength values without impairing toughness. Moreover, the two-phase microstructure guarantees higher resistance to pitting and stress corrosion cracking in comparison with conventional stainless steels.

The first-generation grades were alloys of chromium, nickel and molybdenum and while they provided good performance characteristics, welds had low toughness due to excessive ferrite, which limited the use of Duplex pipe steel to a few specific applications.

Duplex 2205 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. “Duplex” describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.

Specifications :

Grade: UNS S31803 / UNS S32205 / UNS S32750 / UNS S32760 / UNS S32550 and more
Size: 6.35 mm OD upto 254 mm OD in 0.6 TO 20 mm thickness
Form Round, Square, Rectangular, Coil, U Tube,
Length Single Random, Double Random & Required Length
End Plain End, Bevelled End
Type Seamless / ERW / Welded
Certification For Duplex Mill Test Certificate as per EN 10204 / 3.2B
Standard ASTM / ASME A/SA 269 / 213 / 249


  • High strength
  • High resistance to pitting, crevice corrosion resistance
  • High resistance to stress corrosion cracking, corrosion fatigue and erosion
  • Good sulfide stress corrosion resistance
  • Low thermal expansion and higher heat conductivity than austenitic steels
  • Good workability and weldability.
  • High energy absorption.
  • Dimensional accuracy
  • Excellent finish
  • Durable

Applications :

  • use in Heat Exchangers
  • use in Instrumentation
  • use in Hydraulic & Pneumatic system
  • use in Nuclear Power Plants
  • use in Automotive industries
  • use in Aerospace
  • use in Medical
  • use in Pharmaceutical
  • use in Oil coolers
  • use in Pre-heater
  • use in Economizers
  • Use in Condenser
  • Use in LNG
  • Use in Pulp and paper
  • Use in Offshore construction
  • Use in Food and pharmaceutical processing
  • Use in Desalination and wastewater projects
  • Use in Aircraft Tubing
  • Use in Electrical Submersible Pump

Chemical Composition :

Major Chemical
Ni – 4.50 / 6.50
Cr – 21.00 / 23.00
Mo – 2.50 / 3.50
Ni – 6.00 / 8.00
Cr – 24.00 / 26.00
Mo – 3.00 / 4.50
Ni – 6.00 / 8.00
Cr – 24.00 / 26.00
Mo – 3.00 / 4.00
Cu – 0.50 / 1.00
W – 0.50 / 1.00

Why Choose Us :

We have huge experience, expertise in Duplex stainless steel pipe and the best dedicated team to deliver best quality products delivered as well as services at the most affordable prices for Duplex stainless steel pipe. We are looking ourselves as good business partners for customers and are looking forward to establish long term professional relationship. With our world class manufacturing facilities to Duplex stainless steel pipe.

we are able to deliver on time for all grades of Duplex stainless steel pipe. Our stock house always has storage capacity for keeping lots of order from our clients. We make sure that the packaging of ordered materials is done in the best way.

Although lots of options are available in the market, we still stand apart in the market in the field of manufacturing, packaging and export of our products. What really makes us different from others is our commitment to quality. With a vast experience of over four decades in manufacturing of pipes and tubes, we have great expertise and technical edge for the manufacture.

We have long experience in the business of manufacturing of Duplex stainless steel pipes. We have established state of the art manufacturing facilities and have the best technology available for the manufacturing process along with the best technical staff. Our raw materials are selected and purchased after a vigorous quality control check has been done by our research team.  So having all these factors on our sides we ensure that all our clients whether small business owners or big parties should get the best possible deal from us

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