Our company's atypical flange manufacturer produces atypical flanges, also known as non-standard flanges, which serve as sealing and fastening components. They are widely used in large vessels in aerospace, petrochemical, and other industries. Regardless of processing capabilities, the sheer size of atypical flanges makes it impossible to machine them as a whole due to transportation constraints, necessitating segmented processing.

Typically, atypical flanges are divided into several arc segments for processing. Initially, the rough forging is shaped into square billets, then cold-bent into arc segments. After stress-relieving heat treatment, these segments are assembled into a complete circle and machined into the desired shape and size on a vertical lathe. They are then transported to the construction site, where the arc segments are welded together to form a complete atypical flange and joined with the pressure vessel.

Due to the differing specific dimensions represented by the nominal diameter of the vessel's cylindrical shell and the nominal diameter of the pipe, containers with the same nominal diameter as flanged vessels have different sizes. Therefore, container flanges and pipe flanges with the same nominal diameter cannot be used interchangeably.

Production and execution standards for non-standard flanges: National Standard, American Standard, Japanese Standard, German Standard, Italian Standard, Chemical Industry Department Standard, Mechanical Department Standard, Pressure Vessel Standard.