LONG WELDNECK FLANGE

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LONG WELDNECK FLANGE

Emcor Engineering is a renowned manufacturer and exporter of Long Weld Neck Flanges in India and across the globe. We are dedicated to delivering cost-effective, reliable, and top-quality flanges to our valued customers. Long Weld Neck Flanges (LWN flanges) are specifically employed in high-pressure scenarios, with integral hub weld neck flanges being utilized for elevated pressure applications. In such situations, the welds are strategically positioned away from the flange’s ring to prevent the amalgamation of bending and weld stresses.

The design of the Long Weld Neck Flange serves as a substitute for a Weld Neck Flange and a piece of pipe in a bolt-up connection to the vessel. This innovative design minimizes stress on the flange neck by transferring it to the base, where it connects with the vessel. Among the various self-reinforced nozzle designs, the Long Weld Neck Flange is the most commonly used, with two distinct types available: the heavy barrel featuring a long weld neck and the equal long weld neck barrel, which comes in a variety of shapes.

This type of flange, commonly known as a long weld neck flange, serves to effectively manage variations in pressure and temperature within the liquid flowing through a pipeline. Long weld neck flanges are frequently employed as secure anchors in water mains due to their capacity to endure elevated pressures. They are also suitable for connecting extensive networks of pipes, such as those within industrial facilities. Long weld neck flanges can play a crucial role in expansion bends, as well as in extending or reducing pipe sizes. They become essential components in vessels requiring extended necks or hubs to extend their functionality. These flanges find extensive applications in industries like chemical, petroleum, and oil & gas, where they must withstand substantial stress and temperature fluctuations. Emcor Engineering is a notable manufacturer and exporter of such fittings.

CARBON STEEL SPECIFICATION:           

  • Size : 1/2″ NB to 80″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Carbon Steel : ASTM A 105
  • Carbon Steel : DIN Standard – EN 10222-2/ EN 10222-4 – P235GH / P245GH / P265GH / P280GH / P295GH / P355N / P355NH / P285NH / P285QH
  • Other Services: Hot Dip Galvanizing, Sand Blasting, Special Threading.

ALLOY STEEL & LTCS SPECIFICATION:

  • Size : 1/2″ NB to 80″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Alloy Steel : ASTM A 182-F5, F9, F11, F21, F22 & F91
  • Low Temp.CS : A 350 LF2
  • Other Services : Hot Dip Galvanizing, Sand Blasting, Special Threading.

STAINLESS STEEL & DUPLEX STEEL SPECIFICATION:

  • Size : 1/2″ NB to 64″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Stainless Steel : ASTM A 182 F -304/304H/304L/316/316H/316L/316Ti/309/310/317L/321/347/904L,XM19
  • Stainless Steel : DIN Standard EN 10222-5 1.4301/1.4307/1.4401/1.4404/1.4529/1.4571/1.4541/1.4410/1.4550/1.4335/1.4539
  • Duplex Steel : ASTM A 182 F -51, F 53, F 55

NICKEL ALLOYS SPECIFICATION:

  • Size : 1/2″ NB to 48″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Copper Nickel : C70600(90:10), C71500(70:30), C71640
  • Nickel : UNS N02200, N02201
  • Monel : UNS N04400, N05500, Alloy 20
  • Inconel : UNS N06600, N06601, N06625, N08800, N08810, N08825,
  • Hastelloy : UNS N10276, N06022, N10665, N06455,
  • SMO 254 Grade UNS S31254
  • Aluminium : ASTM B247, B361 – 2024, 6061, 6063, 6101, 7075.
  • Titanium : ASTM B381 – Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23

Test Certificate:

  •  Manufacturer test Certificate En 10204, 3.1 & 3.2
  •  IBR Test Certificate Form IIIC
  • TPI Inspection Release Note (as per customer requirement)
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