GB/T 40259-2021 General specification for supporting quality of longwall face

GB/T 2423.1-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests A:Cold GB/T 2423.2-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Tests B:Dry heat GB/T 2423.4-2008 Environmental testing for electric and electronic products—Part 2:Test method—Test Db:Damp heat,cyclic(12 h+12 h cycle) GB/T 2423.5-2019 Environmental testing—Part 2:Test methods—Test Ea and guidance:Shock GB/T 2423.10-2019 Environmental testing—Part 2:Tests methods—Test Fc:Vibration(sinusoidal) GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures "d" GB 3836.3-2010 Explosive atmospheres—Part 3:Equipment protection by increased safety "e" GB 3836.4-2010 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety "i" GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) MT 210-1990 The basic test methods for electrical products used in coal mine communication, detection, and control MT/T 772-1998 GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m" GB 3836.9-2006 Electrical apparatus for explosive gas atmospheres—Part 9:Encapsulation "m" GB 3836.9-2014 Explosive atmospheres—Part 9:Equipment protection by type of protection “m” GB/T 3836.9-2021 Explosive atmospheres—Part 9:Equipment protection by encapsulation “m” GB/T 10111-1988 Methods for random sampling by utilizing dices of random number GB/T 10111-2008 Generation of random numbers and procedures applied to sampling inspection for product quality GB/T 17626.3-1998 Electromagnetic compatibility—Testing and measurement techniques-Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.3-2006 Electromagnetic compatibility—Testing and measurement techniques—Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.3-2016 Electromagnetic compatibility—Testing and measurement techniques—Radiated,radio-frequency,electromagnetic field immunity test GB/T 17626.3-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 3:Radiated,radio-frequency,electromagnetic field immunity test GB/T 17626.4-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 17626.4-2008 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 17626.4-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burstimmunity test GB/T 17626.5-1999 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 17626.5-2008 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 17626.5-2019 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test MT 209-1990 The general technical requirements for electrical products used in coal mine communication, detection, and control MT/T 899-2000 Information transmission device for coal mine GB/T 191-2025 Graphical symbols marking for handling and storage of packages