GB 24502-2023 Self-rescuer for coal mine

GB 24502-2009 Chemical oxygen self-rescuer for coal mine

MT 113-1995 Flame and Electrostatic Resistance Test Method and Criteria for Polymer Products Used in Coal Mine Underground Workplaces MT 427-1995 Dissolved oxygen agent with granular superoxide potassium. Technical specifications GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 1226-2001 General pressure gauge GB/T 1226-2010 General pressure gauge GB/T 1226-2017 General pressure gauge GB/T 2423.17-1993 Basic environmental testing procedures for electric and electronic products Test Ka:Salt mist GB/T 2423.17-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Test Ka:Salt mist GB/T 2423.17-2024 Environmental testing—Part 2:Test methods—Test Ka:Salt mist GB 2890-1995 General technical reguirements for filter type respirators GB 2890-2009 Respiratory protection—Non-powered air-purifying respirators GB 2890-2022 Respiratory protection—Non-powered air-purifying gas mask GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.4-2000 Electrical apparatus for explosive gas atmospheres—Part 4:Intrinsic safety“i” GB 3836.4-2010 Explosive atmospheres—Part 4:Equipment protection by intrinsic safety "i" GB/T 3836.4-2021 Explosive atmospheres—art 4:Equipment protection by intrinsic safety “i” GB/T 5099.1-2017 Seamless steel gas cylinders—Part 1:Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa GB/T 5099.4-2017 Seamless steel gas cylinders—Part 4:Seamless stainless steel gas cylinders GB 8982-1998 Oxygen supplies for medicine GB/T 8982-2009 Oxygen supplies for medicine and aircraft breathing 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 28053-2011 Composite cylinders for breathing apparatus GB/T 28053-2023 Fully wrapped carbon fibre reinforced composite gas cylinders with aluminium alloy liners GB/T 31838.2-2019 Solid insulating materials—Dielectric and resistive properties—Part 2:Resistive properties(DC methods)—Volume resistance and volume resistivity AQ 1057-2008 Chemical oxygen self-rescuer initial oxygen generator AQ/T 1057-2008 Chemical oxygen self-rescuer initial oxygen generator MT/T 454-2008 The calcium hydroxide specification for the isolation type oxygen respirator and the self-rescuer GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 8982-2025 Oxygen supplies for medicine and aircraft breathing