China Long Neck Flange Manufacturers Suppliers Factory - Customized Long Neck Flange

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Your Professional Long Neck Flange Supplier

Henan Pipelink Industrial Co., Ltd. was established in 2008 and is an intelligent and innovative pipe fitting enterprise specializing in the development, production, sales, and service of industrial pressure pipe fittings.

Our product scope includes elbows, tees, reducers, flanges, bends, pipe caps, forged high-pressure threaded pipe fittings, hydraulic flared flanges, double ferrule fittings, and various other metal pipe connectors.

Long Neck Flanges
In industrial piping systems, reliable connection components are essential. With its unique design and excellent performance, forged steel long neck flanges have become an ideal choice for pipe

Why Choose us

Complete Certification

The company has obtained ISO 9001:2015 quality management system certification as well as CE marking certification.

Quality Standards

Our company's products comply with a wide range of domestic and international specifications and standards, including American standards (ASME/ANSI), German standards (DIN), European standards (EN 10241), Japanese standards (JIS), British standards (BS), Russian standards (GOST), Chinese national standards (GB/T), and domestic industry standards.

Advanced Production Equipment

Our production capabilities are supported by advanced machinery, including CNC machining centers, CNC bending machines, automatic welding robots, laser cutting machines, CNC drilling machines, and CNC gantry machining centers.

Parameter

Flange Type	Type V2 LWN
Size	20"
Pressure Class	600#
Length	19.375"
Material Grade	A350 LF2 CL1
Facing	RF
Origin	Import

Benefits of Long Neck Flange

Extremely strong and reliable
Long neck flanges use a long, tapered hub that gradually increases the thickness of the pipe from the weld all the way to the face of the flange. This design assures that the stress created internally by the flow of high-pressure liquid is transferred to the pipe, thus reducing the stress on the flange itself.

Handles high pressure and temperature fluctuations well
Due to the nature of the oil, gas, and petrochemical industries, the piping systems used within them must transfer large quantities of liquid across great distances. This requires the system to use a great deal of pressure to force the liquid along the pipe. In addition, these pipes often are constructed in very unforgiving hot and cold environments. The design of the long neck flange can help mitigate the constant changes in pressure and temperature that piping systems encounter as they flow through the twists, turns and changes in elevation that the average pipeline system encounters.

Assures the smooth flow of the liquid passing through them
Because long neck flanges are bored to match the inside diameter of the pipe itself, the flow of high-pressure liquid is not impeded. This design assures that there is little “turbulence” within the pipe, a common cause of erosion, resulting in stronger more durable pressure vessel connections.

Easier to align, install and test
The design of the long neck flange makes it easy to align to the pipe network in which it is installed and results in a stronger weld. Another benefit of the design is that it is very accessible when checking the integrity of the weld via radiography testing.

Application of Long Neck Flange

Large pipe networks
Long neck flange the safest and best choice, whether it is a water main, gas main, or another large piping network. Large networks need high pressure to keep everything in the pipes moving. It results in the strain on smaller pipes and may end up damaging if not accounted for correctly, and this is where industrial long weld neck flanges help.

Office complexes and apartment buildings
Like with any other large pipe network, high pressures are required to keep everything on the move. For that reason, you will commonly find long weld neck flanges that lead into these buildings.

Volatile or hazardous fluids
Wild temperature swings from sub-zero to near-boiling and high pressures may wear on the pipes and fittings used to transport the fluid. Long weld neck flanges may help cut costs by reinforcing the pipes used in high-pressure, high-temperature situations.

Additional Information

Shipping	We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.
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FAQ

Q: What is a long neck flange?

A: A Long Weld Neck Flange is an integral self-reinforcing Flange connection primarily for ASME Pressure Vessel applications<. The Long Weld Neck (LWN) Flange was designed to be used in place of a Weld Neck Flange and piece of pipe for a bolt up connection to the vessel.

Q: When to use long weld neck flange?

A: Long weld neck flanges can be used in high pressure industrial applications, as well as high temperature situations. They are often utilized in the oil and gas or petrochemical industries.

Q: Do weld neck flanges have a schedule?

A: Pipe schedule is same as flange schedule, and pipe thickness (schedule) equal to the date (E-B)/2. Schedule is commonly abbreviated to SCH. Flange schedule usually appears in weld neck flange and socket welding flange.

Q: Can weld neck flanges be used in high temperatures?

A: Weld neck flanges are stronger and more reliable than slip-on flanges and are typically used in high-pressure and high-temperature applications. One key difference between slip on flanges and weld neck flanges is the way in which they are attached to the pipe.

As one of the leading long neck flange manufacturers and suppliers in China, we also support customized service. We warmly welcome you to buy high quality long neck flange for sale here from our factory. Good service and reasonable price are available.

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