Which industries or fields are socket weld flanges widely used?

What is socket welding flange?

Socket welding flange refers to a flange that is inserted into the flange ring ladder at the end of a pipe and welded at the end and outside of the pipe. There are two types: with and without a neck. The neck pipe flange has good rigidity, small welding deformation, and good sealing performance, and can be used in situations with pressures ranging from 1.0 to 10.0MPa. Type B flanges for containers are also socket welded flanges, used in situations with high sealing requirements. During design, socket welding flanges can be checked as integral flanges.

Features of Socket welding flange

Socket welding is usually used for small pipes with a diameter less than DN40 and is more economical. Butt welding is usually used for parts above DN40. Socket welding is the process of first inserting the socket and then welding it (for example, there is a flange called a socket flange, which is a convex welding flange that is connected to other parts (such as valves). The connection form of butt welding flange and pipeline welding, socket welding usually involves inserting the pipeline into the flange and welding it, while butt welding uses the butt welding flange to weld the pipeline to the mating surface. Although X-ray inspection is not possible, butt welding is acceptable. Therefore, it is recommended to use butt welding flanges to improve the requirements for welding inspection.

Welding sockets are often used under high pressure due to their reinforcement effect, but socket welding also has drawbacks. Firstly, the stress state after welding is poor, making it difficult to completely melt. The trend is that there are gaps in pipeline systems, making them unsuitable for medium sensitive to crevice corrosion and pipeline systems with high cleanliness requirements; Use socket welding; There are also ultra-high pressure pipelines. Even in small diameter pipelines, there is a large wall thickness and socket welding can be avoided as much as possible through butt welding.

Which industries or fields are socket weld flanges widely used?

Socket weld flanges have been widely used in many industries and fields due to their good sealing, high strength and easy installation, and the following are some of the main aspects:

Petrochemical industry

Whether it is the extraction and refining of crude oil, or the production of various chemical products, a large number of pipelines are required to transport various fluid media, such as crude oil, refined oil, chemical raw materials, intermediate products and finished products. These media often have the characteristics of high pressure, high temperature, flammable, explosive or corrosive, etc., and the good sealing and strength of socket welding flanges can ensure the safe and stable operation of the pipeline system and prevent safety accidents caused by medium leakage.

In the construction and maintenance of petrochemical plants, socket weld flanges facilitate the installation and connection of pipelines, can adapt to the requirements of different pipe diameters and pipeline layouts, and improve construction efficiency.

Power industry

In thermal power plants, the main steam pipeline, reheat steam pipeline, and water supply pipeline are all subjected to high-temperature and high-pressure media. Socket weld flanges are able to withstand the stresses and pressures of these pipes, ensuring the tightness of the piping system, preventing steam and water leakage, and ensuring the efficient operation of power plants.

In nuclear power plants, the safety and reliability of piping systems are extremely demanding. Socket weld flanges have important applications in coolant pipelines and auxiliary system pipelines of nuclear islands, and their high-quality welded connections can meet the strict requirements of nuclear-grade pipelines and ensure the safe and stable operation of nuclear power plants.

Pharmaceutical industry

In the process of pharmaceutical production, it is necessary to transport various pharmaceutical raw materials, intermediates and finished products, as well as purified water, water for injection, compressed air and other public engineering media. The pipe system connected by socket weld flange can meet the requirements of the pharmaceutical industry for pipe materials, such as stainless steel to avoid the impact of the pipeline on the quality of drugs, and its good sealing can prevent drug leakage and the mixing of external impurities, so as to ensure the quality and safety of drug production.

The piping system of the pharmaceutical plant needs to be cleaned and disinfected regularly, and the structure of the socket weld flange is relatively simple, easy to clean and maintain, and can meet the strict requirements of the pharmaceutical industry for the cleaning of the production environment and equipment.

Shipbuilding industry

The ship's power system, fuel system, seawater cooling system, ballast water system, etc. all require a large number of pipe connections. The socket welding flange can be customized according to the characteristics and requirements of the ship's pipeline, adapt to different pipe diameters and installation spaces, and its welding connection can withstand the vibration and impact of the hull during the ship's navigation, ensure the tightness and reliability of the pipeline system, and prevent the leakage of oil, water and other media from causing damage to the ship.

In the process of ship construction and maintenance, socket weld flanges facilitate the installation and replacement of pipelines, which can improve construction efficiency and shorten the construction and maintenance cycle of ships.

Machinery manufacturing industry

In the hydraulic system and lubrication system of various mechanical equipment, pipelines are needed to transport hydraulic oil, lubricating oil and other media. Socket welding flanges can connect the pipes between different components, ensure the tightness and stability of the system, ensure the normal operation of the hydraulic and lubrication systems, and thus ensure the reliable operation of mechanical equipment.

For some mechanical equipment that requires high-precision control and stable operation, such as machine tools, automated production lines, etc., the pipe system connected by socket weld flange can meet its requirements for the quality and reliability of pipe connection, and help to improve the processing accuracy and production efficiency of the equipment.

Supplier of Socket welding flange

LTZC provides Socket welding flange. If you are looking for a supplier of Socket welding flange please contact us for the latest quotation.