Nascent fittings INC provides weld neck flanges in the following materials: stainless steel, alloy steel, carbon and LTCS, copper & nickel alloys, Super Duplex, Nickel, Monel, Inconel, Hastelloy, Aluminium, etc. Like lap joint flanges, weld neck flanges require butt welding for installation. However, their integrity, performance in systems with multiple repeat bends, and the ability to use them in high-pressure and high-temperature systems make them a leading choice for process piping. A weld neck flange, also called a tapered hub flange or high-hub flange, is a kind of flange that can relocate stress to the pipes, ensuring a decrease in high-stress concentration at the bottom of the flange. There are two welding neck flange designs – the first type is used with wipes while the second, longer type cannot be used with pipes but with a process plant. The weld neck flange comprises a round fitting that extends beyond the rim of the circumference. These flanges, typically manufactured from forging, are actually welded to pipes.
The Welding neck flanges are available across various materials. These materials will have to be as per the Standards set. However, the thickness and the inner diameter of the flange will be as per the size of the pipe for which this welding neck flange is being made. Talking of the materials, Carbon alloy is a popular choice of material used to make these flanges since they are also resistant to extreme temperature. Nascent fittings manufactures Weld neck flanges are used in a wide variety of industries, including gas, petroleum, petrochemical, oil and gas, pulp and paper, pharmaceuticals , and water treatment plants etc.
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