Special flange and reducing flange are widely used in aerospace, petroleum, chemical and other large-scale container fields as sealing and fastening connection. Although the problem of processing capacity is not considered, for the special flange, because its size is too large, just because of transportation reasons, the overall processing of the special flange is impossible, so it must be processed in sections. In general, special flanges are machined in several arcs.
Let's talk about the processing method of special-shaped flange: first, forging the blank into square blank, then cold bending it into arc section. After annealing and stress relief heat treatment, a complete circle is formed, which is processed into the designed shape and size on the vertical truck. Finally, it was transported to the construction site.
Special flange production executive standards: national, American, Japanese, German, Italian, chemical, mechanical, pressure vessel standards. The difference between the special-shaped flange and the national standard flange is that the use of the special-shaped flange is more flexible and can be processed according to the actual production needs to meet the needs of enterprises.
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