GB/T 17421.1 General rules for inspection of machine tools Part 1: Geometric accuracy of machine tools under no-load or quasi-static conditions*, 2023-08-06 Update
GB/T 17421.2 General Rules for Machine Tool Inspection Part 2: Determination of Positioning Accuracy and Repetitive Positioning Accuracy of CNC Axis*, 2023-08-06 Update
GB/T 18400.6 Test conditions for machining centres--Part 6: Accuracy of feeds, speeds and interpolations
GB/T 18694 Non-destructivetesting--Ultrasonic inspection--Characterization of search unit and sound field
GB/T 18852 Non-destructive testing—Ultrasonic testing—Reference blocks and test procedures for the characterization of contact probe sound beams*, 2020-11-19 Update
GB/T 9445 Non-destructive testing.Qualification and certification of NDT personnel*, 2015-12-10 Update
GJB 1580A Deformed metal ultrasonic testing*, 2019-12-08 Update
GJB 9712A Qualification and certification for nondestructive testing of personnel
JB/T 8771.4 Test conditions of machining centres.Part 4:Accuracy and repeatability of positioning of linear and rotary axes
JB/T 9269 Mountable environmental requirements of industrial process control computer system
YS/T 837-2012 history
2012YS/T 837-2012 Standard practice for ultrasonic C-scan bond evaluation of sputtering target-backing plate assemblies