Connection application of flat welding flange
The smooth flat welding flange is the most widely used. The flat welded steel flange is suitable for the nominal pressure not exceeding 2.5MPa. The carbon steel pipe connection. The sealing surface of the flat welding flange can be made smooth. It is more suitable for medium conditions. In the case, such as low-pressure non-purified compressed air and low-pressure circulating water, the advantage is that the price is relatively cheap. The structure is reasonable, and the welded steel flange is used for the opposite welding of the flange and the pipe. The strength and rigidity are large, and the high temperature can withstand. High pressure and repeated bending and temperature fluctuations, reliable sealing. Nominal pressure is 0.25 2.5MPa. The butt welding flange adopts concave and convex sealing surface.
The flat welding flange gasket is placed between the two flange sealing surfaces. After tightening the nut, the specific pressure on the surface of the gasket reaches a certain value and then deforms, and fills the unevenness on the sealing surface, so that the joint is tight. A flanged joint is a detachable joint. There are holes in the flange, bolts can be worn to make the two flanges tightly connected, and the flanges are sealed with gaskets. According to the connected parts, it can be divided into container flange and pipe flange.
Flat welding flanges are often used when the medium temperature and pressure are not high and the medium is corrosive. When the medium is corrosive. Rare integral flanges have flat and butt weld flanges. Flange fittings are flanged (flange or splicing) fittings. It can be cast, and the flat welded flange is mainly a part that connects the pipe and the pipe to each other. According to the structure type. It can also be constructed by screwing or welding. Flange joints consist of a pair of flanges, a gasket and a number of bolts and nuts.