JB/T 6311-1992 Clay sand recycle equipment technical specification

GB/T 2684-1981 Foundry sands and sand mixtures for casting—Method of testing GB/T 2684-2009 Test methods for foundry sands and molding mixtures GB 5226.1-2002 Safety of machinery—Electrical equipment of machines—Part 1:General requirements GB 5226.1-2008 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements GB/T 5226.1-2019 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements GB 5226.2-2002 Safety of machinery—Electrical equipment of machines—Part 32:Requirements for hoisting machines GB 5226.3-2005 Safety of machinery—Electrical equipment of machines—Part 11:Requirements for HV equipment for voltages above 1 000 Va.c. or 1 500 Vd.c. and not exceeding 36 kV GB 5226.4-2005 Safety of machinery—Electrical equipment of machines—Part 31:Particular safety and EMC requirements for sewing machines, units and systems GB 5226.6-2014 Electrical safety of machinery—Electrical equipment of machines—Part 6:Requirements for construction machinery GB/T 5226.7-2020 Electrical safety of machinery—Electrical equipment of machines—Part 7:Requirements of industrial robot GB/T 5226.31-2017 Electrical safety of machinery—Electrical equipment of machines—Part 31:Particular safety and EMC requirements for sewing machines,units and systems GB/T 5226.32-2017 Electrical safety of machinery—Electrical equipment of machines—Part 32:Requirements for hoisting machines GB/T 5226.33-2017 Electrical safety of machinery—Electrical equipment of machines—Part 33:Requirements for semiconductor fabrication equipment GB/T 5226.34-2020 Electrical safety of machinery—Electrical equipment of machines—Part 34:Requirements for machine tools GB/T 13306-1991 Plates GB/T 13306-2011 Plates JB 1644-1991 General technical specification for casting machinery JB/T 1644-2005 Forging Machinery General Technical Specification ZB J50 011 ZB J50 014 ZBn J50 008.2 GB/T 2684-2025 Test methods for foundry sands and molding mixtures