Directed by the National Welding Standardization Technical Committee, Harbin Welding Institute Limited Company is responsible for the revision and formulation of GB/T 3670—2021 ,Covered Electrodes for Manual Metal Arc Welding of Copper and Copper Alloys, GB/T 41110—2021 ,Tubular Cored Electrodes for Gas Shielded and Non-gas Shielded Metal Arc Welding of Nickel and Nickel Alloys, GB/T 41111—2021 ,Rods for Gas Welding of Non-Alloy and Creep-Resisting Steels, and GB/T 41112—2021 ,Solid wire electrodes, solid wires and rods for fusion welding of magnesium and magnesium alloys,. These four national standards were issued on December 31, 2021 and will be formally implemented on July 1, 2022. ,Covered electrodes for manual metal arc welding of copper and copper alloys, is the second revision. This revision has been converted into the ISO system, and the designation has been reformed. The structure has been greatly adjusted, and the technical content has changed a lot. ,Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of nickel and nickel alloys,Rods for gas welding of non-alloy and creep-resisting steels, and ,Solid wire electrodes, solid wires and rods for fusion welding of magnesium and magnesium alloys ,are formulated. They are converted according to the corresponding ISO standards which the main technical content is the same as. The standard structure has been adjusted according to the domestic usage. These standards make up the blank of the national standard, and provide important technical support for the research and development, manufacturing and re-inspection of welding materials. This paper introduces the revision of the standard system from the designation and technical requirements, and compares and analyzes with the corresponding national standards abroad, so that users can better understand, master and implement the new standards.This paper introduces the situation of revising and formulating the standard, so that users can better understand, master and implement the new standards. Structural adjustment is big, technical content changes much.