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Weld neck flange,sealed, widely used, there is a corresponding rigidity and flexibility requirements and reasonable butt thinning transition, a large distance from the weld joints, weld joints from temperature deformation, it takes more complex Souba body structure, suitable for pressure or temperature fluctuations pipeline or high temperatures, high pressure and low temperature piping.
ASME B16.5/B16.47 class300 weld neck flange
