LONG WELDNECK FLANGES

Alloyed Sustainables LLP manufactures and offers a diverse range of Long Weld Neck Flanges (LWN flanges) such as Carbon Steel Long Weld Neck Flanges, Alloy Steel Long Weld Neck Flanges, Low-Temperature Carbon Steel (LTCS) Long Weld Neck Flanges, Stainless Steel Long Weld Neck Flanges, as well as other premium materials options Like Hastelloy, Inconel, Monel, Duplex Steel, And SMO 254 Long Weld Flanges. We strictly adhere to recognized standards such as ANSI/ASME B16.5, DIN, AWWA, and API. Designed to excel in demanding conditions, our Long Weld Neck Flanges are the ideal choice for scenarios involving substantial temperature variations and rigorous handling. They are engineered to withstand challenging environments, making them a reliable option for critical applications.

Alloyed Sustainables LLP is a reputable global supplier and exporter of long weld neck flanges, offering quality, affordable, and reliable solutions to clients in India and beyond. These flanges, similar to Weld Neck flanges, have an extended “neck” that serves as a barrel nozzle. They come in two variations: heavy barrels with extended weld necks and barrels with elongated weld necks in different configurations. These flanges excel in high-pressure and high-temperature applications, reflecting Alloyed Sustainables LLP’s commitment to quality and performance.

Key Features of Weld Neck Flanges:

• Extended Neck: Long Weld Neck Flanges have a prolonged neck or hub, allowing for smooth welding, reduced stress concentration, and easy accommodation of insulation.
• Strong Welding: The extended neck facilitates full penetration welding, creating a robust joint that’s crucial in high-pressure applications.
• Even Stress Distribution: The extended neck helps distribute stresses evenly, decreasing the risk of failures in high-stress environments.
• High Pressure and Temperature: Long Weld Neck Flanges are favored in applications with elevated pressures and temperatures due to their design and welding strength.
• Reduced Turbulence: The elongated neck promotes smoother fluid flow, particularly beneficial in systems where flow efficiency matters.
• Resilience to Stress: Long Weld Neck Flanges handle thermal expansion, cyclic loading, and high-stress conditions effectively.

Application across Industries:

• Oil and Gas: In oil refineries and pipelines, Long Weld Neck Flanges are essential for connecting pipes carrying petroleum products under high pressures and temperatures.
• Petrochemicals: These flanges are used in petrochemical plants to connect pipes carrying chemicals and gases at extreme conditions, ensuring leak-free connections.
• Power Generation: Long Weld Neck Flanges play a role in power plants, connecting pipes carrying steam or other fluids under high pressures, contributing to efficient energy generation.
• Chemical Processing: Industries dealing with corrosive chemicals rely on these flanges to securely connect pipes, reducing the risk of leaks and ensuring safety.
• Water Treatment: Water treatment facilities use these flanges to connect pipes carrying treated water, chemicals, and other substances under different pressures.
• Shipbuilding: These flanges are used in ship construction to connect pipes for various systems, including those carrying fuel and other critical fluids.

Our extensive range of Long Weld-Neck Flanges is manufactured from a diverse array of materials and grades to cater to the requirements our valued clients and various industries.

STAINLESS STEEL & DUPLEX STEEL LONG WELD-NECK FLANGES:
Specifications:

• Size : 1/2″ NB to 48″ NB, ANSI/ASME B 16.5
• Standard : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Stainless Steel : ASTM A 240 / 182 F – 304/
  304H/ 304L/ 316/ 316H/ 316L/ 316Ti/ 309/ 310/ 317L/ 321/ 347/ 904L/Alloy 20
• Duplex steel : ASTM A 182 – F 51, F53, F55

ALLOY STEEL, CARBON STEEL & LTCS LONG WELD-NECK FLANGES:
Specifications:

• Size : 1/2″ NB to 48″ NB, ANSI/ASME B16.5
• Class : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Alloy Steel : ASTM A 182 – F5, F9, F11, F12, F22 & F91
• Carbon Steel : ASTM A 105, ASTM A694, F42, F46, F52, F60, F65, F70
• Low Temperature Carbon Steel : A 350 LF2, A 516 GR. 70

COPPER & NICKEL ALLOYS LONG WELD-NECK FLANGES:
Specifications:

• Size : 1/2″NB to 6″ NB, ANSI/ASME B 16.5
• Standard : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Copper Nickel : C70600(90: 10). C71500 (70:30), C71640
• Nickel : UNS N02200, N02201
• Monel : UNS N04400
• lnconel : UNS N06600, N06601, N06625, N08800, N08810, N08825
• Hastelloy : UNS N10276, N06022, N10665, N06455
• Titanium Gr: 1,2,3 DTH 3.7025, DTH 3.7035, DTH 3.7055
• SMO 254: UNS S31254