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GB/T 3488.3-2021
Hardmetals—Metallographic determination of microstructure—Part 3: Measurement of microstructural features in Ti (C, N) and WC/cubic carbide based hardmetals
GB/T 39830-2021
Code for seismic design of steel static storage systems
GB/T 39817-2021
Conveyor belts—Propane burner mid-scale flammability test method
GB/T 39741.1-2021
Plain bearings—Tolerances—Part 1：Fits
GB/T 10782-2021
General rule for the quality of preserved fruits
GB/T 39972-2021
Technical specification of‘Inteplan’information system for implementation and supervision of spatial planning
GB/T 39967-2021
5-axis simultaneous machining center—Accuracy of S-shaped test piece
GB/T 39966-2021
Guidelines for environmental performance evaluation in waste resource multiple utilization enterprises
GB/T 39965-2021
General methods for energy savings pre-assessment
GB/T 39964-2021
Implementation guidance for energy management systems in paper industry
GB/T 39962-2021
Die casting machine—Energy efficiency limits and energy efficiency rating
GB/T 39961-2021
Ball screw assembly—Dimension of shaft-end type screw
GB/T 39960-2021
Straight-sided single-action mechanical power presses—Characteristics and dimensions
GB/T 39959-2021
Liquid pumps and pump units—Noise test code—Grades 2 and 3 of accuracy
GB/T 39958-2021
CNC hole puncher
GB/T 39957-2021
High pressure metal die casting units—Technical requirements
GB/T 39956.2-2021
Pneumatic fluid power—Electro-pneumatic pressure control valves—Part 2: Test methods to determine main characteristics to include in the supplier's literature
GB/T 39956.1-2021
Pneumatic fluid power—Electro-pneumatic pressure control valves—Part 1:Main characteristics to include in the supplier's literature
GB/T 39955-2021
Additive manufacturing—Materials—Powders of Nylon 12 and its composites for powder bed fusion
GB/T 39954-2021
Tool storage with automatic tool changer—Specification of performance test
