long weld neck flange

What is a weld neck flange? A WN flange is a type flange that is to be butt-welded to the pipe or fittings it is being attached to. It has a long tapered hub that transitions smoothly to the pipe or fitting, providing a strong and reliable connection. The welding neck flange has a circular shape with a raised face or a ring-type joint face on the sealing surface. It features a neck or a hub that extends from the flange body, which provides reinforcement and added strength. The inner diameter of the flange matches the inner diameter of the pipe, ensuring a smooth flow of fluids or gases without causing turbulence or additional pressure drop.       The characteristics of neck welded flanges Superior strength and resistance to deformation: The welded connection between the flange and the pipe or fitting creates a permanent bond, eliminating the risk of separation or leakage under high-pressure or high-temperature conditions. The extended neck of the flange also provides extra support and reduces stress concentration on the joint, enhancing the overall structural integrity. 2. Excellent sealing performance: The welded neck flange design is unique, leaving a certain gap between the two flange plates during connection, which can form a very strong seal when using sealing gaskets. This sealing performance is more reliable than other flange connection methods and can be used in harsh environments such as high temperature, high pressure, strong acid, and strong alkali. 3. Easy to install and disassemble: The design of the neck welded flange makes it easier to install and disassemble, without the need for professional technicians to use special tools. 4. Wide applicability: The neck welded flange can be used in industries such as petroleum, chemical, pharmaceutical, food, water treatment, and shipbuilding.       Application fields of weld neck flanges Welded Neck flanges are suitable for many application areas, including but not limited to the following: 1. Petrochemical industry: pipelines in fields such as oil, natural gas, refining, and fertilizers. 2. Food and beverage manufacturing industry: the production pipeline of industries such as candy, pastries, fruit juice, beer, and soft drinks. 3. Water treatment plant: a pipeline connecting water purification and sewage treatment equipment. 4. Construction industry: underfloor heating, ground source heat pumps, HVAC and other building pipelines.       In summary, a weld neck flange is a circular flange with a long tapered hub that is butt-welded to the pipe or fitting. It provides a strong, leak-free connection and is commonly used in high-pressure and high-temperature applications. The welded joint ensures superior strength and structural integrity in critical piping systems.   When installing a weld neck flange, proper welding techniques and procedures must be followed to ensure a strong and leak-free connection. Precision welding is essential to achieve a high-quality, defect-free weld that can withstand the operating conditions of the system.   As a commonly used pipe connector, neck welded flanges are widely used in industries, construction, tap water, and other fields. Its advantages lie in easy installation and use, good sealing performance, strong pressure resistance, and it is a very reliable pipeline connection method.