Custom flanges

Custom flanges are custom products in pipeline engineering. OEM. It is due to the needs of pipeline engineering design and on-site construction. Customized piping fittings are convenient for the use of non-standard piping projects. In the dismantling of standard piping projects and the continuation of later construction, customized piping fittings and customized flanges must be used.

For example, custom sliding flanges, because the pipeline enters the single flange before welding. It is necessary to provide sufficient strength inside and outside to prevent leakage. Sliding flanges are matched with a slightly larger outer diameter to the pipe. They are superior to the welding of neck flanges.

Custom lap flange, the welding flange is a similar sliding flange, unless it has a hole and a counter hole size. Customize the matching of flanges and pipes so that the pipes are inserted into the flanges. The diameter of the smaller hole is the same as a shoulder sleeve designed for the pipe to stay at the bottom. This eliminates any flow restrictions and improves the ease of operation while using custom welded flanges.

Special-shaped flanges are also called special-shaped flanges as sealing and fastening connections. It is widely used in large vessels in aerospace, petroleum, chemical and other fields. Although the problem of processing ability is not considered, for the special-shaped flange, due to its too large size, only due to transportation reasons, the overall processing of the special-shaped flange is changed to split processing. Under normal circumstances, the special-shaped flange is always divided into several arc segments for processing.

First, the blank is forged into a square billet, and then cold-formed into arcs. After annealing and stress-relief heat treatment, it is assembled into a whole circle and processed to the designed shape and size on a vertical lathe. Finally, it is transported to the construction site, and then several arcs are grouped together. Weld into a complete special-shaped flange and assembled with the pressure vessel. Because the nominal diameter of the container cylinder of the special-shaped flange and the specific size represented by the nominal diameter of the pipe are different, the size of the container flange and the pipe flange of the same nominal diameter are also different, and the two cannot be substituted for each other. The pressure grade, material and standard of special-shaped flanges have different characteristics and characteristics. They are used in accordance with certain principles, methods and methods in use, and can be produced and processed in accordance with corresponding standards to ensure that they have good use value and effect. The materials are mostly carbon steel, alloy steel and stainless steel.