Flange

What is flange

The flange connection is easy to use and can withstand large pressures. In industrial pipelines, flange connections are widely used. In households, the diameter of the pipeline is small and it is low pressure, and flange connections are not visible. If there are flange connected pipes and equipment everywhere in a boiler room or production site.

Features of flange

The flange adopts the principle of surface sealing, with strong connection tightness, which can ensure the safe and reliable operation of the fluid conveying system. And it can still operate stably under high temperature or high pressure working conditions. The manufacturing cost of flanges is relatively low, and assembly through fixing methods such as screws or nuts is simple, which can improve production efficiency and reduce production costs. The flange is designed considering factors such as disassembly, cleaning, maintenance, and replacement, which has good operability and can reduce labor, material, and time costs.

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.

Applications of flange

Flanges are widely used for the connection and linkage of mechanical equipment such as machine tools, engines, and compressors, playing a very important role.

Flange supplier 

LTZC privde bearings with accuracy covers four levels of Po, P6, P5 and P4. implementation standards: universal bearing GB/T307, flange JB/2300, ship industry CB/T3669, machinery industry JB/T10471, wind turbine bearing B/T10705. The SO9001 quality system certification has been passed in 2003.

LTZC providing a series of services such as research and development, design, production, and sales of  flange products.If you are looking for flange supplier, please contact us for the latest quotation.