GB/T 6968-2019 Diaphragm gas meters

GB/T 6968-2011 Diaphragm gas meters

GB/T 2410-2008 Determination of the luminous transmittance and haze of transparent plastics GB/T 2423.3-2016 Environmental testing—Part 2:Testing method—Test Cab:Damp heat,steady state GB/T 2423.17-2008 Environmental testing for electric and electronic products—Part 2:Test methods—Test Ka:Salt mist GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 5080.7-1986 Equipment reliability testing Compliance test plans for failure rate and mean time between failures assuming constant failure rate GB/T 9113-2010 Integral steel pipe flanges GB/T 10125-2012 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 11186.3-1989 Methods for measuring the color of paint films—Part 3:Calculation of color differences GB/T 13893-2008 Paints and varnishes—Determination of resistance to humidity—Continuous condensation GB/T 14536.1-2008 Automatic electrical controls for household and similar use—Part 1:General requirements GB/T 16422.3-2014 Plastics—Methods of exposure to laboratory light sources—Part 3:Fluorescent UV lamps GB/T 17626.2-2006 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.3-2016 Electromagnetic compatibility—Testing and measurement techniques—Radiated,radio-frequency,electromagnetic field immunity test GB/T 17626.4-2008 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 17626.5-2008 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 30789.3-2014 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 3:Assessment of degree of rusting GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods 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 3836.2-2000 Electrical apparatus for explosive gas atmospheres—Part 2:Flameproof enclosure “d” GB 3836.2-2010 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures "d" GB/T 3836.2-2021 Explosive atmospheres—Part 2:Equipment protection by flameproof enclosures “d” 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 8897.1-2003 Primary batteries—Part 1:General GB/T 8897.1-2008 Primary batteries—Part 1:General GB/T 8897.1-2013 Primary batteries—Part 1:General GB/T 8897.1-2021 Primary batteries—Part 1:General GB 8897.4-2002 Primary batteries—Part 4:Safety of lithium batteries GB 8897.4-2008 Primary batteries—Part 4:Safety of lithium batteries GB/T 9978.1-2008 Fire-resistance tests—Elements of building construction—Part 1:General requirements GB/T 191-2025 Graphical symbols marking for handling and storage of packages