High Precision Duplex Steel EFW Tubes, of ASTM A312 Duplex Steel S31803 EFW Tubes, Exporter of Duplex Steel S32205 Cold Drawn EFW Tubes, Duplex Steel High Quality EFW Round Tubes Stockiest.

of Duplex Steel S31803 EFW Tubes, Duplex Steel S32205 EFW Tubes Supplier, Duplex Steel UNS S31803 Cold Drawn EFW Tubes in India, Duplex Steel S31803/S32205 EFW Tubes in India.

ASTM A358 Stainless Steel ERW Tubes, Steel Grade 304/L/H, 316L/H, 317, 317L, 321/H, 347, 347H, 410, 446, 904L Welded ERW Tubes Leading Manufacturers.

Kobs India is one of India’s leading manufacturers of high quality EFW (Electric Fusion Welded) Tubes which find application across diverse sectors. These Stainless Steel EFW pipes and tubes consigns to an electron beam welding, and the usage of high-speed movement of the electron beam focussed blow kinetic energy is transformed to heat the work piece so that the work piece leaving the liquefy, the development of the weld. We supply these EFW Pipes to the following industries on a worldwide scale: Gas Industry, Oil Industry, Offshore Industry, Filtration Industry, Refining Industry, Refrigeration Industry, Petrochemical Industry, and more.

Our EFW Pipes can be offered in made to order length sizes and shapes, and are available at market leading prices. These pipes and tubes can also be fabricated and machined to meet up the piping needs of our clients.

ASTM A312 EFW Tubes, High Temperature EFW Tubes, SCH20, SCH30 EFW Tubes, Duplex Steel EFW Tubes, Electropolished Tubes, Duplex Steel S32205 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


Chemical Composition

Grade Common Name C% Mn% Si% P% S% Cr% Ni% Mo% N%
2205 S31803 0.030 2.00 1.00 0.030 0.020 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20
2205 S32205 0.030 2.00 1.00 0.030 0.020 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20

Mechanical Properties

Tensile strength 620MPa min Density 7,805kg/m3
Yield strength 450MPa mi Elastic modulus 200GPa

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
Nickel :
Grade: Nickel 200, Nickel 201
Super Duplex Steel:
Grade: 2507 (UNS S32750), Z100
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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