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Stainless steel formed components used to close the ends of pressure vessels or storage tanks may feature ellipsoidal, dished, hemispherical, or conical configurations. Their geometric shape and minimum post-forming thickness directly influence the vessel’s pressure-bearing capacity and service life.
Fabriquées avec des équipements CNC avancés et des processus éprouvés, nos brides, cintres de tuyaux et raccords offrent des dimensions précises, des performances d'étanchéité stables et une installation fiable dans des applications industrielles exigeantes.
Executive Standard: GB/T 25198-2023 “Heads for Pressure Vessels.”
Type: Ellipsoidal, dished, hemispherical, spherical cap, or conical; selected according to design drawings.
Ordering Dimensions: Inner/outer diameter, nominal thickness, minimum post-forming thickness, straight flange height, total depth, and weld edge preparation (bevel).
Material: Stainless steel grade, plate standard, heat treatment condition, and intergranular corrosion requirements must be specified.
Inspection: Visual appearance, geometric dimensions, thickness, non-destructive testing (NDT), and quality documentation shall comply with vessel design specifications and the purchase order; pressure vessel heads are not subject to pipe fitting pressure class ratings.
Ordering/Acceptance: Based on approved drawings; verify head type, reference diameter, nominal/minimum post-forming thickness, straight flange, bevel, material, heat treatment, and NDT; check quality certificates and geometric deviations.
