High Precision Super Duplex Steel EFW Tubes, of ASTM A312 Super Duplex Steel S32750 EFW Tubes, Exporter of Super Duplex Steel Grade 2507 Cold Drawn EFW Tubes, Super Duplex Steel UNS S32750 High Quality EFW Round Tubes Stockiest.

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High quality EFW Electric Fusion Welded Tube is all made and controlled to the relevant standards such as: ASME, ASTM, BS and DIN/WERKSTOFFE.

Leading Manufacturers of ASTM/ASME/SA 790 UNS S31803 Duplex & Super Duplex Steel EFW Tubes,Duplex Steel 2205 EFW Tubing, Duplex Steel UNS S31803 EFW Tubes Suppliers, 2205 Duplex Steel Rectangular EFW Tubes , Duplex S32205 ERW Tubes Exporter, Duplex Welded Pipes, 2205 Duplex Steel EFW Tubing in Mumbai, 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 Tubes that are compliant to ASTM A789/790, a specification that covers tubes with a nominal wall thickness that are recommended to use in general corrosive services.

our Super Duplex Steel UNS S31083 tubes 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 Tubes 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 Tubes to the food processing industry.

ASTM A312 EFW Tubes, High Temperature EFW Tubes, SCH20, SCH30 EFW Tubes, Super Duplex Steel EFW Tubes, Electropolished Tubes, Super Duplex Steel Grade 2507 EFW High Temperature Pipe Stockiest.

Standards Specification:

Range : 6NB to 1200NB

Outer Diameter : 1/8" NPS to 12" NPS

Thickness : 0.6 mm to 12.7 mm

Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.

Length : Single Random, Double Random & Cut Length

Specifications : ASTM A312 / ASTM SA312

Types : Round, Square, Rectangle, Hydraulic, Honed Tubes

End : Plain End, Beveled End


Material & Grade :

Super Duplex Steel:
Grade: 2507 (UNS S32750)

Chemical Composition

C Cr Ni Mo N Others
0.020 25 7 4.0 .27 S=0.001

Mechanical Properties

Ultimate Tensile Strength, ksi 116 min.
0.2% Offset Yield Strength 0.2%, ksi 80 min.
0.1% Offset Yield Strength 0.2%, ksi 91 min.
Elongation in 2 inches, % 15 min.
Hardness Rockwell C 32 max.
Impact Energy, ft.-lbs. 74 min.

Product Features:

  • Durability
  • High strength
  • Effective functionality
  • Sturdy construction
  • Corrosion resistance
  • Dimensional accuracy

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Manufacturing Process :

The process commences with the formation of welded tube on the tube mill from imported and tested prime quality stainless steel strips. The latest TIG multi electrode welding technique is employed for superior weld quality and 100% Fusion, with argon purging, No filler metal added.

Product Usage & Application :

  • Useful in Paper & Pulp Companies
  • Useful in High Pressure Applications
  • Useful in Oil and Gas Industry
  • Useful in Chemical Refinery
  • Useful in Pipeline
  • Useful in High Temperature Application
  • Useful in Water Pipe Line
  • Useful in Nuclear Power Plants
  • Useful in Food Processing and Dairy Industries
  • Useful in Boiler & Heat Exchangers

Other grades also available :

Stainless Steel :
Grade: 304, 304L, 304H, 309, 309S, 310, 310S, 316, 316H, 316L , 317, 317L, 321, 321H, 347, 347H, 904L
Duplex Steel:
Grade: 2205
Nickel :
Grade: Nickel 200, Nickel 201
Inconel :
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Titanium :
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Monel :
Grade: Monel 400, Monel K500, Monel R-405
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Incoloy :
Grade: Incoloy 800, Incoloy 800H, Incoloy 800HT

Packing :

  • Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging.
  • We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
    • Shrink-wrapped
    • Carton boxes
    • Wooden pallets
    • Wooden boxes
    • Wooden crates

Why Choose Us :

  • You can get the perfect material according to your requirement at the least possible price.
  • We also offer Reworks, FOB, CFR, CIF, and door to door delivery prices. We suggest you to do deal for shipping which will be quite economical.
  • The materials we provide are completely verifiable, right from raw material test certificate to the final dimensional statement.(Reports will show on requirement)
  • e guarantee to give a response within 24hours(usually in the same hour)
  • You can get stock alternatives, mill deliveries with minimizing manufacturing time.
  • We are fully dedicated to our customers. If it will not possible to meet your requirements after examining all options, we will not mislead you by making false promises which will create good customer relations.

Tests we carry out (including both Destructive and Non-Destructive) :

  • Positive material recognition
  • Mechanical examining like tensile, Elongation and reduction of area.
  • Large-scale test
  • Chemical examination-Spectro analysis
  • Firmness test
  • Pitting protection test
  • Small tests
  • X-ray test
  • Impact analysis
  • Eddy current examining
  • Hydrostatic analysis
  • Prompt test

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