▎ 摘　　要

NOVELTY - Zirconium alloy cladding tube comprises zirconium alloy tube body and composite protective layer formed on at least a part of the inner wall of the zirconium alloy tube body. The composite protective layer comprises a graphene material and a zirconium material. USE - Used as zirconium alloy cladding tube. ADVANTAGE - The cladding tube: has improved anti-percutaneous coronary intervention effect and abrasion resistance and is stress corrosion-free. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the zirconium alloy cladding tube, comprising (i) providing a zirconium alloy tube body; (ii) mixing graphene material, zirconium material and solvent to obtain mixed liquid; and (iii) forming composite protective layer on at least part of the surface of the inner wall of the zirconium alloy tube using the mixed solution.