1, connect the pipeline and make the pipeline adhere to the outstanding sealing function;
2, if there is a problem with a certain pipe, it is convenient to replace a certain pipe;
3. The pipeline is defective, which is convenient for disassembly and testing.
Butt welding flange: It is suitable for the connection of steel pipes whose nominal pressure does not exceed 2.5MPa. The sealing surface of the butt welding flange flange can be made into three types: smooth, concave and convex and tongue and groove. The characteristics of the butt welding flange flange: the butt welding flange flange not only saves space and reduces the weight, but more importantly, it ensures that the joints will not leak and have an outstanding sealing function. The size of the compact flange is reduced because the diameter of the seal is reduced, which will reduce the cross-section of the sealing surface. Secondly, the flange gasket has been replaced by a sealing ring to ensure the matching of the sealing surface.
Butt welding flange is divided into thread connection (wire connection) flange and welding flange. Low-pressure small-diameter wire flanges, high-pressure and low-pressure large-diameters both use welded flanges. The thickness of flanges and the diameter and number of connecting bolts are different for different pressures. According to different levels of pressure, flange gaskets also have different materials, ranging from low-pressure asbestos gaskets, high-pressure asbestos gaskets to metal gaskets. The flange connection is easy to use and can accept greater pressure.
Butt welding flange steel flange: suitable for the connection of carbon steel pipes whose nominal pressure does not exceed 2.5MPa. The sealing surface of the butt welding flange can be made into three types: smooth, concave and convex and tongue and groove. It is mostly used when the medium conditions are relatively gentle, such as low-pressure non-purified compressed air and low-pressure circulating water. Its advantage is that it is cheaper.