ANSI B 16.5, ASME B 16.47 Stainless Steel Long Weld Neck Flange, of ASTM A182 Stainless Steel 304/304L Long Weld Neck Flanges, Exporter of Stainless Steel 317/317L Raised Face Long Weld Neck Flanges, MSS SP44 Stainless Steel ANSI 150 Long Weld Neck Flanges Stockist.

of Stainless Steel 304/304L Long Weld Neck Flange, Stainless Steel 317/317L Long Weld Neck Flange Supplier, Stainless Steel 310 Long Weld Neck Flanges Exporter, Stainless Steel 347/347H DIN 2642 Long Weld Neck Flanges in India.

Long Neck Welding (abbreviated LWN) flanges are similar to a standard Welding Neck flange, but the "Neck" is considerably longer. This type is often used as a nozzle for a barrel or column. In addition, there are the type LWN Heavy Barrel (HB) and the Equal LWN Barrel (E); they have a different shape and a thicker "Wall".

The NW Long Weld Flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange.

Kobs India offers a wide range of long weld flanges. It helps in high pressure and the need for a hub that is long and tapered are what weld neck flanges are most often used for. Specifying the schedule of pipe that it will be utilized for is of utmost importance when ordering. This type of flange is excellent for use in environments involving extreme temperature fluctuations and excessive handling and bending. It is required when an extended neck is required. It acts as a boring extension. It is used in chemical and petroleum industries and used in residential and commercial buildings. It performs well where there is level of stress and temperature fluctuate. Long weld flanges are built in a variety of lengths, size and dimensions according to the need of the customers.

B16.5 ASTM A182 Long Weld Neck Flange, Fusion Bonded Epoxy Coating, EN 1092-2 PN16 Long Weld Neck Flange, ASME B16.5 Dual Stainless Steel Long Weld Neck Flange, ANSI B16.5 Class 150 Flat Face Long Weld Neck Flange, Stainless Steel 317/317L 30 Inch Long 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 :

Chemical Composition 304 (1.4301), 304L (1.4307), 304H (1.4948)

Chemical Composition 309 (1.4828), 310, 310S (1.4845)

Chemical Composition 316 ( 1.4401), 316L( 1.4404 /1.4432), 316H

Chemical Composition 317, 317L (1.4438)

Chemical Composition 321 (1.4541), 321 H(1.4878)

Chemical Composition 347 (1.4550), 347H (1.4961)

Chemical Composition 904L (1.4539)

Mechanical Properties 309 (1.4828) / 310 / 310S (1.4845)

Mechanical Properties 316 ( 1.4401), 316L( 1.4404 /1.4432), 316H

Mechanical Properties 317, 317L (1.4438)

Mechanical Properties 321 (1.4541), 321 H(1.4878)

Mechanical Properties 347 (1.4550), 347H (1.4961)

Mechanical Properties 904L (1.4539)

Product Features:

• Low cost installation
• Less time needed to spent on ensuring the accuracy of the cut pipe
• They are somewhat easier to align
• The flange is welded both inside and outside to provide sufficient strength
• They prevent leakage

Other grades also available :

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