Method for processing thin-walled tube of zirconium alloy specially used by nuclear reactor

The invention relates to a method for processing a thin-walled tube of zirconium alloy specially used by nuclear reactor with the specification of Phi 12.8 multiplied by 0.25mm. The adopted technical scheme is characterized by comprising the following steps: selecting and using a zircaloy tube (1) with a certain length of Phi 44.5 multiplied by 7.65 mm, then conducting the steps such as cold rolling, primary intermediate annealing, primary acid cleaning, second pass cold rolling, secondary intermediate annealing, secondary acid cleaning, final cold rolling, final annealing, straightening and then polishing, acid cleaning and complexing treatment, detection and then cutting constant length, and the like on the zircaloy tube, and finally completing the process of the thin walled tube of zirconium alloy specially used by the nuclear reactor. The thin-walled tube of zirconium alloy specially used by the nuclear reactor which is processed by the method reaches the requirement of the required machining accuracy, meets the operating requirement of the nuclear reactor, and changes the unfavorable situation that in China, the thin-walled tube of zirconium alloy specially used by the nuclear reactor, which has the specification and the machining accuracy, depends on import.