What are Weld Neck Flanges Series B?
Weld Neck Flanges Series B, also called the pressure vessel flanges, are widely used in high-pressure piping systems and applications. They are made of carbon steel, stainless steel, low-alloy steel, and other materials, and their nominal pressure rating ranges from 150 to 2500 as per ASME B16.5 specifications.
They have a long tapered hub that provides reinforcement to the flange and distributes the stress evenly. The welding neck flange is attached to the pipe by butt welding, and the end of the pipe extends into the flange's inner bore, making a positive connection.
Characteristics of Weld Neck Flanges Series B
Weld Neck Flanges Series B is characterized by a long inner hub taper and a circular weld neck. They have a narrow contact area between the flange face and gasket, which results in high-pressure containment. The inner bore's elongated design helps in reducing turbulence and pipework deflection.
The welding neck flange's tapered hub design offers excellent protection against thermal shock, thermal fatigue, and mechanical vibrations. They also feature a large, smooth bore that reduces friction losses and pressure drop.
Benefits of using Weld Neck Flanges Series B
There are several advantages of using Weld Neck Flanges Series B in an industrial application. Firstly, they provide higher pressure-holding capacity as compared to other types of flanges, which reduces the risk of leaks and increases the safety factor.
Secondly, their smooth bore design provides low friction losses, reducing energy consumption and improving the system's efficiency. Thirdly, their ability to distribute the stress evenly reduces the chances of flange deformation or gasket compression, leading to a long lifespan.
Finally, their tapered hub and weld preparation design provide enhanced durability and resistance against thermal and mechanical shocks, making them ideal for high-pressure and high-temperature applications.
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