API 6A Weld Neck Flanges are pipe flanges attach by welding the pipes to the neck of the flanges. This transfers stress from the flange to the pipe instead. It also reduces the stress concentration from the base of the hub. Welding neck flanges remove stress concentration and allow full working pressure and they are often used for high pressure applications. The inside diameter of the flange is designed to match the pipe's inside diameter. Weld neck pipe flanges are typically provided with a raised face, flat face, or RTJ facing.
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
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
ProductASME 165 weld neck flanges BrandRenaissance Pipe Fitting Inc SizesRefer the specification ConditionNew Rating46 based on 50 reviews priceStart from 20 USD RFP India offers a range of Weld Neck Flanges As the name implies it is called as a neck part of the flange which is being welded to the last points of the piping system Weld Neck Flanges has a wideranging tapering focal point and are commonly used for high pressure applications In fact it is being designed to shift the pressure within the pipe in a way to dip the high pressure concentration towards the bottom of the flange Weld Neck Flanges are also quite known from other forms by their wideranging pointed centre and modest development of thickness in the butt weld area by joining them with the pipe RANGE 15 NB to 60 1500NB in 150 LBS 300 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS ASA 150 ASA 300 PN 6101625 4064100160 ETC available with NACE MR 0175 SIZE 15NB to 60 1500NB CLASS PRESSURE Class Pressure 150 300 600 900 1500 2500 PN6 PN10 PN16 PN25 PN40 PN64 DIMENSION B165 BS4504 EN1092 B1636 B1647 B1648 MSS SP44 STD STD ANSI Flanges ASME Flanges DIN Flanges EN Flanges BS Flanges API JIS NACE etc FEATURES Dimensional accuracy Corrosion resistance High efficiency Excellent finish Durable Stainless Steel Weld Neck Flanges Standard ASTM ASME ASA 182 Grade F 304 304L 304H 309S 309H 310S 310H 316 316TI 316H 316L 316LN 317 317L 321 321H 347 347H 904L Duplex Steel Weld Neck Flanges Standard ASTM ASME ASA 182 Grade F 44 F 45 F51 F 53 F 55 F 60 F 61 Aluminium Weld Neck Flanges Standard ASTM B247 B361 Grade 2024 6061 6063 6101 7075 Titanium Weld Neck Flanges Standard ASTM B381 Grade Grade 1 Grade 2 Grade 4 Grade 5 Grade 6 Grade 7 Grade 9 Grade 19 Grade 23 Carbon Steel Weld Neck Flanges Standard ASTM A 105A694 A350 LF3A350 LF2 Grade F42465256606570 Low Temperature Carbon Steel Weld Neck Flanges Standard ASTM A 350 LF2 A350 LF3 Alloy Steel Weld Neck Flanges Standard ASTM A182 Grade F1F5F9F11F22F91 Copper Alloy Weld Neck Flanges Standard ASTM ASME SB 61 62 151 152 Grade UNS NO C 70600 CU NI 9010 C 71500 CU NI 7030 C 71640 Nickel Alloy Weld Neck Flanges Standard ASTM ASME SB 564 160 472 Nickel 200 UNS N02200   Nickel 201 UNS N02201   Monel 400 UNS N04400 Monel K500 UNS N05500   Inconel K600 UNS N06600   Inconel 601 UNS N06601 Inconel 625 UNS N06625   Inconel 800 UNS N08800   Inconel 800H UNS N08810 Inconel 825 UNS N08825   Hastelloy C276 UNS N10276   Alloy 20 UNS N08020 Test Certificate Manufacturer Test Certificate as per EN 10204 31 nbsp Types Of Weld Neck Flanges SS 310 310S Weld Neck Flanges Duplex Steel UNS S31803 Weld Neck Flanges Stainless Steel 304 304L Weld Neck Flanges Duplex Steel Weld Neck Flanges Stainless Steel 316 316L Weld Neck Flanges Duplex Steel UNS S32205 Weld Neck Flanges Stailess Steel 321 321H Weld Neck Flanges Super Duplex UNS S32750
Since the time of our inception, our range of SS Weld Neck RingFlange has been quite popular. These products exhibit high tenacity and durability with reliable outputs. Manufactured from stainless steel, these products are tested as per the international standards of quality. We can also customize these products as per the needs and demands of the clients. These flanges are specially used as extensions for expansion joints. The features of these products are as follows: Specifications: Standard: ansi b16.5 Size: 1/2-48 Features: Durable Reliable Long service life Low maintenance Corrosion-free
-Since the time of our inception, our range of SS Weld Neck RingFlange has been quite popular. These products exhibit high tenacity and durability with reliable outputs. Manufactured from stainless-steel, these products are tested as per the international standards of quality. We can also customize these products as per the needs and demands of the clients. These flanges are specially used as extensions for expansion joints. The features of these products are as follows: Specifications: â?¢ Standard: ansi b16.5 â?¢ Size: 1/2â?³-48â?² Features: Durable Reliable Long service life Low maintenance Corrosion free
Description:- Weld Neck flanges Range: - 15 NB TO 1500NB (1/2 to 60") ANSI B 16.5 (150#, 300#, 400#, 600#, 900#, 1500# & 2500#) Material: Stainless Steel - ASTM A-182 (304, 304L, 316, 316L Carbon Steel - ASTM A-105, A-350 LF2, IS 2062, AS 516 Gr. 70, C45 Alloy Steel - ASTM A-182 F5, F9, F11, F12, F21, F22.
Long Weld Neck Flange
A welding neck flange (WN) features a long tapered hub that can be welded with a pipe. This flange type is used, normally, in high-pressure and high/low temperatures applications that require an unrestricted flow of the fluid conveyed by the piping system (the bore of the flange matches with the bore of the pipe). The absence of pressure drops prevents negative effects as turbulence and erosion/corrosion of the metals in the proximity of the flanged joints. The tapered hub allows a smooth distribution of the mechanical stress between the pipe and the weld neck flange and facilitates the execution of radiographic inspections to detect possible leakages and welding defects. The dimension of the flange (NPS and the pipe schedule) shall match the dimension of the connecting pipe.
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
