Flange type, according to the flange and pipe fixation is divided into threaded flange, welded flange, loose flange; According to the sealing surface, can be divided into smooth, concave and convex, tongue and groove, lens and trapezoidal slot formula.
General low pressure small diameter wire flange, high pressure and low pressure large diameter welding flange, different pressure flange thickness and connecting bolt diameter and number are different.
According to the different levels of pressure, flange pads also have different materials, from low-pressure asbestos pads, high-pressure asbestos pads and PTFE pads to metal pads.
The flange connection is easy to use and can withstand greater pressure.
In industrial pipelines, flanged connections are used in a wide range of applications, such as indoor hydrant water supply systems, butterfly valves, gate valves, check valves, and other types of valves and pipelines.