This document specifies the classification and marking of nickel and nickel alloy plates, technical requirements, test methods, inspection rules, marking, Encasement, transportation, storage and accompanying documents and content of order forms. It is applicable to instruments, electronic enclosures, various Pressure Vessels, corrosion-resistant devices and nickel and nickel alloy plates for Miscellaneous industrial use. The document refers to a series of normative documents, including tensile test of metal materials, rockwell hardness test, grades and chemical composition of processed nickel and nickel alloys, methods for determination of average grain size of metals, etc. In the classification and marking part, the grades, status and specifications of products are specified. Appendix A provides a comparison with the corresponding grades of relevant domestic and foreign standards. Terms and definitions are not defined in this document.