Introduces the concept of performance characteristics analysis of butt welded flange

　　Flange is a disc type parts, play a very important role in the pipeline links, the flange is usually used in pairs, in the pipeline engineering is mainly used for welding flange pipe links on both ends of pipeline to be linked or is arranged at one end of the flange, if it is a low pressure pipeline you can choose the flange for wire, if the pressure exceeds four kg will choose to use the welding flange, between two flanges and gaskets, then tighten bolts, different pressure flange with different thickness, so to choose the right according to the thickness of the flange bolts, valve and pump at when connected with the pipeline, the flange of these devices will have a flange corresponding to the shape, this form can also be called the flange connection, it It is said that in the two plane around the use of bolts to connect and connect the two closed link parts, generally referred to as the "flange connection".

　　In the pipeline project, the pipeline between the flange connection is very common, in the form of more important place or is relatively more important more expensive pipeline connection time, usually choose surfacing on the flange connection, due process for welding flange itself is more complex, and cost is relatively high, performance is also better than general flange, in key positions is more appropriate.

　　Welded flange is also known as the open flange is a flange in the. Welded flange is not easy to deform, very good sealing performance, application is very extensive, the requirements of the corresponding rigid and elastic, from the mouth of welding joint surface distance is relatively large, for is joint from welding temperature of deformation. Welded flange generally applicable to PN greater links of pipelines and valves 2.5MPA and is also frequently used to transport price is expensive or flammable and explosive medium pipeline, because performance is much better than the general flange.