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ANSI B 16.5, ASME B 16.47 Inconel Weld Neck Flange, of ASTM A182 Inconel 600/601 Weld Neck Flanges, Exporter of Inconel 625 Raised Face Weld Neck Flanges, MSS SP44 Inconel UNS N06600 ANSI 150 Weld Neck Flanges Stockiest.

of Inconel 600/601 Weld Neck Flange, Inconel 625 Weld Neck Flange Supplier, Inconel UNS N06601 Weld Neck Flanges Exporter, Inconel 718 DIN 2642 Weld Neck Flanges in India.

A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange.

Inconel Weld Neck Flanges is used where high pressure is required. These pipe flanges attach by welding the pipe to the neck of the flange. It helps in reducing the stress concentration from the bottom of the center.

Kobs India offers the best weld neck flanges with a hub in varieties of specifications, grades, materials and sizes. These type of flanges have a long tempered hub and used in applications where high pressure is a factor. When ordering a weld neck flange, it is essential to identify the schedule pipe is being used for. This is because the inside diameter of the flange will match the inside diameter of your pipe. The buttweld joint this flange has with the pipe along with the tapered hub, makes this flange very resistant to dishing and a very sturdy connection. Weld Neck Flange is an ideal product used in extreme fluctuations of temperature and environments where there may be a lot of bending and handling of the flanges.

B16.5 ASTM A182 Weld Neck Flange, Fusion Bonded Epoxy Coating, EN 1092-2 PN16 Weld Neck Flange, ASME B16.5 Dual Inconel Weld Neck Flange, ANSI B16.5 Class 150 Flat Face Weld Neck Flange, Inconel 625 30 Inch Weld Neck Flange Stockiest.


Standards Specification:

  • Size : 1/2" to 48"
  • Specifications : ASTM A182
  • Rating: 150#, 300#, 600 (2.4640)#, 900#, 1500#, 2500#,

Material & Grade :

Inconel :
Grade: Inconel 600 (2.4640), Inconel 601 (2.4851), Inconel 625 (2.4856), Inconel 718(2.4668)

Chemical Composition

Grade Ni Fe C Mn Si Cu Cr S Mo Co Al Ti
600 (2.4640) 72.0 min 6.0 - 10.0 0.15 1.0 0.5 0.5 14.0 - 17.0 0.015 - - - -
601 (2.4851) 58.0 – 63.0 Balance 0.10 1.0 0.50 1.0 21.0 – 25.0 0.015 8.0-10.0 - 1.0 – 1.7 -
625 (2.4856) Remainder 5.0 0.10 8.0-10.0 0.50 - 20.00-30.00 0.015 8.0-10.0 1.0 0.40 0.40
718(2.4668) 50.00-55.00 Remainder 0.08 0.35 0.35 0.30 17.00-21.00 0.015 2.80-3.30 - 0.20-0.80 0.65-1.15

Mechanical Properties

Grade Tensile (psi) .2% Yield (psi) Elongation (%)
600 (2.4640) 95,000 45,000 40
601 (2.4851) 80,000 30,000 35
718(2.4668) 180,000 150,000 12(min)

Product Features:

  • Sturdy design
  • Accurate dimensions
  • High strength
  • Corrosion resistant
  • Smooth transition from flange thickness to pipe
  • Can be easily radio graphed for flaw detection
  • Can be easily welded to a pipe or fitting with a single full penetrations

Other grades also available :

Stainless Steel :
Grade: 304 (1.4301), 304L (1.4307), 304H (1.4948), 309 (1.4828), 309S, 310, 310S (1.4845) , 316 ( 1.4401), 316H, 316L( 1.4404 /1.4432) , 317, 317L (1.4438), 321 (1.4541), 321 H(1.4878), 347 (1.4550), 347H (1.4961), 904L (1.4539)
Duplex Steel:
Grade: 2205 (1.4507)
Super Duplex Steel:
Grade: 2507 (UNS S32750) (1.4410) (UNS S32750)
Nickel :
Grade: Nickel 200, Nickel 201
Titanium :
Grade: Gr.1 (3.7025) , Gr.2 (3.7035) , Gr.3:(3.7055) , Gr.5(3.7164/65), Gr. 7(3.7235) , Gr. 11 (3.7225)
Monel :
Grade: Monel 400 ( 2.4360), Monel K500, Monel R-405
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Incoloy :
Grade: Incoloy 800 (2.4958), Incoloy 800H, Incoloy 800HT

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Manufacturing Process :

The manufacturing process of flange mainly is divided into forging, casting, cutting and rolling. .

The casting and forging flanges have advantages that the blanks of them have accurate shape, size and low costs and only need simple process. But forging flanges have manufacturing defects such as blowholes, cracks, etc and have not very smooth internal organization streamline. The obvious advantages of forging flanges are that they can be forged in various shapes and they have low costs. .

Forging flanges generally have lower carbon content than the casting flanges and are not easy to rust. They have smooth streamline, uniform internal organization, and better mechanical performance than that of casting flanges. There are no defects, such as blowholes and cracks existing in the casting flanges. Forging flanges are able to withstand higher shear and drawing forces than casting flanges. However, if adopting improper forging process, it will also cause appearance of large, uneven grains and solidification cracking phenomenon, resulting in higher cost than the casting flanges. .

We can distinguish between the casting flanges and forging flanges from the different production process. To take the centrifugal flange as an example, it is a kind of casting flange. Centrifugal flanges are produced by a precision casting method, which makes the flanges’ organization smaller than those commonly produced by sand casting and improves the quality of flanges, making fewer occurrences of loose tissue, pore, sand hole etc.

Cutting process refers to producing flanges by directly cutting a round plate with the inner diameter, outer diameter and thickness which can be further processed later from the middle plate, and then processing the bolt hole and waterline. The maximum diameter of such flanges is limited by the width of the middle plate.

Cutting process refers to producing flanges by cutting stripes from the middle plate and then rolling them into round shape. This process is mainly used for the production of large flange. After the rolling process, weld and then flatten the round shape, and finally process the serrated spiral finish and bolt hole.

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

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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