Kobs India is one of India’s leading manufacturers of high quality EFW (Electric Fusion Welded) Pipes and 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 Carbon Steel 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 Alloy Steel 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.
Grade: S32205 (1.4507), S31803 (1.4462)
Pipe Range : ½”Inch and 24”Inch
Outer Diameter : 6.0-630mm
Wall Thickness : 0.3mm – 50 mm
Schedules : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Length : Single Random, Double Random & Required Length
Specifications : ASTM A790 / ASME SA790
Types : EFW
|Tensile strength||620MPa min||Density||7,805kg/m3|
|Yield strength||450MPa mi||Elastic modulus||200GPa|
Processing of Electric Fusion Welding, also called Continuous Welding begins as coiled steel with appropriate thickness, width and weight is made. To form a continuous ribbon of steel several coils are welded together. Then the steel ribbon is heated to the necessary temperature and formed into an oval. In the next step the edges of the tube strip are permanently pressed together by rolls in order to receive a forged weld. In the last stage sizing rolls convert the welded tube into specific dimensions.
Stainless Steel :
Grade: 304, 304L, 304H, 309, 309S, 310, 310S, 316, 316H, 316L , 317, 317L, 321, 321H, 347, 347H, 904L
Grade: Nickel 200, Nickel 201
Super Duplex Steel:
Grade: 2507 (UNS S32750), Z100
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Grade: Monel 400, Monel K500, Monel R-405
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Grade: Incoloy 800, Incoloy 800H, Incoloy 800HT