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The stainless steel pipe factory specially provides stainless steel pipe pressure calculation method against stainless steel pipe internal pressure: According to GB/T20801.3-2006 pressure pipe specification industrial pipe design and calculation when t <D/6 according to the straight pipe internal pressure formula (1) design :p=2tSf/(D-2tY) p——Design pressure or maximum allowable working pressure in megapascals (MPa) t ——Calculated thickness, according to internal pressure or external pressure (or vacuum), calculated by formula The thickness obtained in millimeters (mm) f - the longitudinal welded joint coefficient or the casting quality coefficient of the weldment, according to GB/T 20801.2-2006 S - the allowable stress of the metallic material of the pipe component at the design temperature, in GB /T 20801.2-2006 Checked in Table A.1, in megapascals (MPa); D——outer diameter of pipe, nominal value of outside diameter of pipe, or measured value, measured in millimeter (mm) Y——calculated Coefficient, when t<D/6, when t≥D/6, Y=(d+2C)/(D+d+2C)d——inner diameter of tube, used for pressure calculation, should be allowed by material standard The maximum value, in millimeters (mm); C - additional thickness, the sum of corrosion, erosion margin and machining depth, that is, C = C2 + C1, in millimeters (mm); The knowledge of stainless steel pipe pressure source stainless steel pipe plant.