The invention discloses a method for
machining steel cylinders with different plate thicknesses. The method comprises the steps that S1, parts are blanked and machined, specifically, the parts are
cut through gas
cutting or
plasma cutting, and random spot check is conducted on site when the parts are blanked every time; s2, a cylinder
pipe rolling and circle returning process which comprises the steps that S21, preparation work before cylinder rolling is conducted; step S22, rolling a cylinder; step S23,
welding a longitudinal seam of the cylinder; step S24, secondary roundness correction of the cylinder; and S3, cylindrical
pipe fitting
assembly, specifically, S31, cylindrical
pipe fitting
assembly front requirements are met; step S32, carrying out a cylinder
assembly construction process; s33, carrying out
nondestructive testing on the cylinder
welding seam; step S34, cylinder precision control; step S35, measuring the size of the cylinder; and S4, the cylinders are subjected to mark spraying treatment, and the cylinders are warehoused after being subjected to user inspection or final inspection. The manufacturing problem of large-
diameter steel cylinders with different thicknesses is solved; the construction difficulty is reduced, and the
manufacturing efficiency is improved.