The formulation of this standard has normative and guiding significance for the identification of old pumps, remanufacturing processes and methods, remanufacturing tests, remanufacturing traceability and labeling of hydraulic piston pump remanufacturing. Through the implementation of this standard, the market can improve the understanding of remanufacturing. To create awareness and trust in piston pumps, promote and improve the remanufacturing level of hydraulic piston pumps, promote the improvement of the technical level, safety, reliability, environmental protection and other aspects of engineering machinery remanufactured products, and achieve energy conservation and emission reduction. , green manufacturing, and promote the healthy development of the hydraulic piston pump remanufacturing industry.