Long-necked flanges, also known as LWN flanges, are similar to the standard weld neck flanges but the neck is considerably longer. This type of flange is often used as a nozzle for a barrel or a column. They can be classified later as standard type, heavy gun type, variable body type and whole body type. These flanges are kind of exclusive for the reason of their uncomplicated connectivity with other pipes. Where standard weld neck flanges are used extensively for pipes, long weld neck flanges (often abbreviated to LWN) are used in high pressure and high (or fluctuating) temperature situations primarily in the oil and gas industry. The long neck guides the pipe into the flange itself and provides reinforcement that a standard weld neck flange cannot. This reinforcement is very important for safety in high pressure industrial, commercial and even residential systems.
Uses of long-necked flanges are primarily on vessels where an elongated neck is required. Long-necked flanges (LWN) are primarily utilised on vessels where an elongated neck is required. This is considered a specialty flange because of the protruding neck or hub, which acts as a boring extension.
The conical collar helps reduce the thickness of the steel and appears to be a pipe extension. LWN steel flanges are used primarily in the chemical and petroleum industries, as well as in commercial and residential buildings ASME 16.47 anf asme 16.5 series of long weld flanges are used exclusively for situations in high levels of stress and fluctuating temperatures.
Long Weld Neck Flange
Long weld neck flanges (LWN) are similar to weld neck flanges, with the exception that the neck (tapered hub) is extended and acts like a boring extension. Long weld neck flanges are generally used on vessels, columns or barrels. These flange types are available also in the heavy barrel (HB) and equal barrel (E) types
A long weld neck flange LWN flange is a type of flange that has a long tapered neck that extends from the flange face to the pipe This longer neck provides more support to the pipe at the weld joint making it a more robust and reliable connection LWN flanges are typically used in highpressure and hightemperature applications such as in the oil and gas industry Technical Specifications Dimensions 12 to 24 in diameter The neck length is typically 15 to 2 times the flange diameter Materials Carbon Steel Stainless Steel or Alloy Steel Pressure ratings 150 psi to 2500 psi Temperature ratings 200F to 1000F Types RFFFRTJ LWN flanges are used in a variety of applications including Oil and gas industry Chemical industry Power generation Water treatment HVAC The benefits of using LWN flanges include Increased strength and reliability Longer service life Wider range of applications Easier to assemble and disassemble
Material - Stainless Steel Shape - Round Thickness - 40-50mm CertificationI - SI Certified Application - Gas Fitting, Industrial Fitting, Water Fitting Color - Grey Connection - Welded Grade - SS 304
Flanges used for steel pipeâ??s connection are various. So we should make our flanges lead to the purpose of our steel pipes like seamless or erw steel pipe. So we need to do some lesson before purchase. Function of long weld neck flanges is predominantly on vessels. We know that vessels have some places need an extended neck so flange can do this job for us. The purpose of tapered neck is to reduce the thickness of the steel and it then seems to be a pipe extension. The combination of steel pipe and long weld neck flange would make the whole engineering project easy and convenient. Utilized in the chemical and petroleum industries, as well as commercial and residential buildings that experience high levels of stress and temperatures that fluctuate, flanges have played an important part during our daily life.
Made available by us is a wide and commendable range of Weld Neck Flanges (WNRF). All our products comes with welding neck, which is hot formed from a circular section of steel plate having a small co-axial hole in the center due to which these are durable. These products find their wide applications in engineering and construction industries because of rustproof construction, excellent finishing and lightweight. Specifications: Stainless Steel: ASTM A 182 and A 240 Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L Duplex Stainless Steel: UNS S31803 and 2205 Super Duplex Stainless Steel: UNS S32750 Carbon Steel: ASTM A 105 and ASTM A 181 Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9 and F91 Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22 and C276 Copper Alloys: Copper, Brass & Gunmetal Size: 1/8" NB to 48" NB Class: 150, 300, 400, 600, 900, 1500 & 2500 Standards available: ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36 and ANSI B16.48 DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638 and DIN2673 B.S: BS4504, BS4504, BS1560 and BS10
A weld neck flange is a type of flange that is joined to a piping system by butt welding. The flange consists of a circular fitting with a protruding rim around the circumference. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. The flange also has a long tapered hub that gradually meets the wall thickness of the pipe or fitting. Technical Specifications: Materials: Carbon steel, stainless steel, duplex steel, alloy steel, etc. Dimensions: 1/2" to 24" Class range: Class 150 to 2500 (ANSI/ASME B16.5) Type: RF,FF,RJT PN range: PN 2.5 to PN 250 Hub length: Short hub (SH), Long hub (LH), Extra long hub (XH) Finish: Black, mill finish, painted, etc. Advantages of Weld Neck Flanges: Increased strength and durability Reduced stress concentration Smooth transition from flange thickness to pipe or fitting wall thickness Easy to radiograph for flaw detection Can be used in high pressure and high temperature applications Applications: Power plants Chemical plants Oil and gas industries Water treatment plants HVAC systems Other industrial applications
Product Details: Color : Silver Material Coper, Stainless Steel, Nickel Alloy, Carbon Steel, Copper Alloy, Mild Steel Size 3/4 inch, 0-1 inch, 1-5 inch, 5-10 inch, 10-20 inch, 20-30 inch, 1 inch, 1/2 inch, 3 inch, 2 inch Class 150#, 300#, 600#, 900#, 2500# No. Of Holes 4, 8, 12 Rated Pressure (Bar) 2500 Application Gas Pipe, Structure Pipe, Pneumatic Connections, Hydraulic Pipe Shape Round & as per drawing also Material Standard ASTM A105, ASTM A182, ASTM A351, ANSI B16.5 Flanges available & manufactured a s per drawing provided by client in any shape & formGrades like - 202 / 304 / 304L / 316 / 316L / 309 / 310s / Inconel / Monel / Hestalloy / Brass / Bronze and many other nickela based alloys Sample also provided for Inspection
Metal Aids India a accredited with AN ISO 9001: 2015, 14001: 2015, OHSAS 18001 & PED Certified Company and was established in since 2010. We take the pleasure to introduce ourselves as a largest Manufacture & Exporter of all type of industries products like Flange, Forging Flange, Component Flanges, Precision Different Component Flanges in different shape & size (as per client drawing & specification) etc in CNC Lathe & Milling Machine (VMC) Description: Stainless Steel Flange Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES Size: 1/2\" To 48\" (15 NB To 1500 NB) Type : Socket Weld, Slip On, Blind, Lapped, Screwed, Weld Neck, Long Weld Neck, Reducing, Spectable, Ring Joint Flanges Class : 150#, 300#, 400#, 600#, 900#, 1500#, 2500# Form : Circle, Square, Plate, Ring, Flat Grade : Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES Stainless Steel : SS 202, 304, 304L, 321, 321H, 347, 310, 316, 316L, 317L, 347, 410, 420, 430, 440A, 440B, 440C, 904L & Many. Duplex & Super Duplex: UNS S31803, UNS32205(F51), UNS 32750 (F 53), UNS 32760 (F 55), UNS S31254 (SMO. 254) High Nickel Alloy : Nickel Alloy 200 (UNS No : N02200), Nickel 201, Monel 400, Monel 500, Inconel 625, Inconel 800, Inconel 825, Inconel 718, Inconel X-750, Alloy 20 (CB 20), Hastelloy C 276, Hastelloy C 22, Hastelloy C4 Other Alloys: Titanium Gr 2, Titanium Gr 5, Aluminium Bronze (A2), Phosphorous Bronze (PB)
