Superior Structural Integrity Long Neck Flange ASME B16.5 DN80 Class 150
1. Product Description
A Long Weld Neck Flange (LWN Flange) is a type of piping component specifically designed for high-integrity connections. Its defining feature is an extended tapered hub (neck) , which is connected to the pipe via a butt weld . This design is engineered to provide exceptional strength and is typically manufactured from forged and heat-treated materials for superior mechanical properties . It is primarily used to connect pressure vessels, heat exchangers, and pumps to piping systems, or to connect piping segments to one another .
2. Key Product Parameters
The table below summarizes the essential technical specifications for Long Weld Neck Flanges:
Parameter Details
Types & Codes Long Weld Neck Flange (LWN), High Hub Flange
Applicable Standards ASME B16.5 , HG/T 20615-2009 (American Class Series) , Client-specific drawings
Nominal Diameter (DN/NPS) Wide range available, commonly from 1/2 inch (DN15) to 24 inches and larger
Pressure Ratings American System (Class): Class 150 to Class 2500 . Suitable for high-pressure applications .
Sealing Face Types Raised Face (RF), Male-Female (MFM), Ring Joint (RJ), among others .
Common Materials Carbon Steel, Stainless Steel (e.g., 304, 316L) , Alloy Steel .
Manufacturing Process Forging and heat treatment , precision machining via CNC .
3. Product Applications
Long Weld Neck Flanges are built for demanding services and are widely used in critical industries , including:
Petrochemical Plants
Oil & Gas pipelines and facilities
Power Generation
Heavy Industries
Boilers and Pressure Vessels
Shipbuilding
4. Product Advantages
Excellent Structural Integrity & Stress Distribution: The long, tapered hub provides a smooth transition from the pipe to the flange, significantly reducing stress concentration and increasing rigidity, which helps the flange withstand high temperatures and pressures .
Superior Sealing Performance: The robust construction and various sealing face options make it ideal for maintaining a leak-tight seal in severe service conditions .
Enhanced Durability: The use of forged and heat-treated materials provides outstanding mechanical attributes, offering resistance to deformation and fatigue .
Reliable Connection: The butt weld connection ensures a strong, integral bond with the piping .
Long Neck Flange
J518 Stainless Steel Hydraulic Split Flange
Integrated molding, corrosion resistance,high pressure resistance
FAQ
Q:Are you a manufacturer or a trader?
A:We are not only a professional manufacturer of PE pipes, but also a trusted trading partner. From raw material procurement, manufacturing to global delivery, we provide customers with seamless one-stop services to ensure that product quality, delivery and service are controllable.
Q: Can we get some samples? Is there a fee?
A:Yes, we will provide you with the required samples. Samples are free, but customers may have to pay for shipping.
Q:What is your delivery time?
A: Different products and purchase quantities have different lead times,Commonly used specifications of goods generally take 5-10 days.
Q. What’s your main market?
A: Our main market is African, Middle East Countries, South American, Asian.
