Manufacturer of forged long-height-diameter flanges, welded flanges with necks

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The long-neck flange achieves structural optimization by increasing the height of the neck; the extended portion of the neck provides additional support, effectively reducing the transmission of torque in the pipeline. Its structural design enables the reduction of the stress concentration factor, thereby significantly improving the stability of the connection between the flange body and the pipe fittings. Compared to standard necked butt weld flanges, the axial load-bearing capacity is increased by 15%-20%, but the welding material consumption increases by about 30%. The long-neck flange is an industrial product among flange connectors that features a special structural design; its neck height is significantly higher than that of ordinary butt-welded flanges, and stiffness and load-bearing capacity are enhanced primarily by extending the neck structure.