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ASTM/ASME/SA 790 UNS S32205 Duplex & Super Duplex Steel ERW Pipes

Leading Manufacturers of ASTM/ASME/SA 790 UNS S31803 Duplex & Super Duplex Steel ERW Pipes, Ferritic / Austenitic Duplex Steel 2205 Seamless Tubing, Duplex Steel UNS S31803 Welded Pipes Suppliers, 2205 Duplex Steel Rectangular Welded Pipes, Duplex S32205 ERW Pipes Exporter, Duplex Welded Pipes, 2205 Duplex Steel EFW Tubing in Mumbai, India., Stockist of ASTM A790790 Seamless Tube, Werkstoff No 1.4462 Duplex Steel Seamless Pipes, ASTM A789 Duplex Welded Pipe Manufacturer, 2205 Duplex Steel S32205 Seamless Tubing Manufacturers, UNS S32205 Duplex Welded Tubing Exporter, Duplex ERW Pipes Suppliers, 2205 Duplex ERW Tubing Wholesaler in India., ASTM A790 Duplex ERW Pipes, Duplex Steel Rectangular Pipes Exporter, Standard Size A790 Duplex Steel Welded Pipes Stockist, S31803 Duplex Polished Pipes, ASTM A790 Duplex Steel Square Pipes, 2205 Duplex Coiled Tubing Stock Holder, Duplex Steel Instrumentation Tubes Dealer in India.

KOBSINDIA has a unique product portfolio that is engineered as a durable piping component, which is a sustainable alternative with premium quality, contributing to a businesses growth. We offer our two cents on product selection too, guiding you through the plethora of resources and choosing the best for you. With us, you can be guaranteed for the finest customer experience. We are a manufacturer, supplier and exporter of Duplex Steel Pipes that are compliant to ASTM A789/790, a specification that covers pipes with a nominal wall thickness that are recommended to use in general corrosive services. Thereby, our Duplex Steel UNS S31083 Pipes have a high strength and impact toughness, combined with the superior abilities to resist pitting and crevice corrosion. Biofuels plants, pressure vessels and bleaching equipment are connected using these corrosion-countering pipes. Our ASTM A789 Duplex & Super Duplex Steel UNS S32205 Seamless Pipes have a high degree of weldability and are hardened through cold working, however, they are slightly difficult to machine. We supply ASTM 790 Duplex Steel DIN 1.4462 Welded Pipes to the food processing industry.

We understand you are looking for SA 790 UNS S31803 Duplex & Super Duplex Steel ERW Pipes, we are specialized in ASTM A790 Duplex & Super Duplex Steel UNS S31803 Pipe since 1975. Offer unbeatable prices incorporating large discounts against a range of Duplex & Super Duplex Steel UNS S31803 Seamless Pipe, Duplex & Super Duplex Steel UNS S31803 SCH 40 Pipe, Duplex & Super Duplex Steel UNS S31803 SCH 80 Pipe, Duplex & Super Duplex Steel UNS S31803 rectangular steel tubing/ Solar Pipe, Duplex Steel UNS S31803 Tuburia, Tubular Products in India.

KOBSINDIA is manufacturer, stockist & supplier the highest quality corrosion and temperature resistant Duplex & Super Duplex Steel ERW Pipes. KOBSINDIA is PED approved manufacturer & Govt. of India recognized Export House and an ISO 9001 : 2008, 18001:2007, 14001:2004 accredited company. We supply precision smooth bore duplex steel UNS S31803 Pipe/ tubing for marine environments, brackish water, bleaching operations, closed loop water systems and some food processing applications.

ASTM A790 Duplex & Super Duplex Steel UNS S32750 Pipe is the most widely used duplex (ferritic/austenitic) stainless steel grade. KOBSINDIAs is India's leading supplier & exporter of ASTM A790 Duplex & Super Duplex Steel UNS S32750 Pipe in various countries. An ISO 9001:2008 Certified Company, KOBSINDIA Pipes have a widest inventory UNS S31803 pipe, A790 S31803 pipe, S31803 Duplex & Super Duplex Pipe, Duplex & Super Duplex 2205 pipe, & many more special steel grades tubing.

KOBSINDIA ensure highest quality Duplex & Super Duplex Steel UNS S31803 seamless pipe for use in extreme environments. We are focused on meeting both your materials and supplier relationship needs. Our Duplex & Super Duplex Steel UNS S31803 Welded Pipe/ Tubing made from cold formed stainless steel have a smooth finish and strong mechanical traits, as well as closer tolerances than hot formed coil-based welded pipe..


  • Oil Industry
  • Gas Industry
  • Refrigeration Industry
  • Filtration Industry
  • Petrochemical Industry
  • Offshore Industry


Standard : ASTM / ASME SA 790. SA 789 , SA 790
Size : 1/4” NB TO 32” NB
Length : Single Random, Cut Length
Grade : UNS NO. S 31803, S 32205

Chemcial Composition

Grade C Mn Si P S Cr Mo Ni N Fe
S31803 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min
S32205 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 21.0 – 23.0 2.50 - 3.50 4.50 – 6.50 0.8 – 0.20 63.54 min

Mechanical Properties

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 / S32205 7.805 0.285 1420 – 1465 2588 – 2669

ASME SA790 Duplex Steel Pipes & Tubes Equivalent Grades

Duplex 2205 1.4462 S31803 / S32205

KOBSINDIA exports Alloy Steel EFW Pipes to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

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