NB/T 10529-2021 Coal mine water-cooling adjustable-speed magnetic coupling

MT/T 208-1995 Slipping conveyor hydraulic coupling GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 1348-1988 Spheroidal graphite iron castings GB/T 1348-2009 Spheroidal graphite iron castings GB/T 1348-2019 Spheroidal graphite iron castings GB/T 3190-1996 Wrought aluminium and aluminium alloys—Chemical composition limits GB/T 3190-2008 Wrought aluminium and aluminium alloy——Chemical composition GB/T 3190-2020 Chemical composition of wrought aluminium and aluminium alloys 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 3836.3-2000 Electrical apparatus for explosive gas atmospheres—Part 3:Increased safety “e” GB 3836.3-2010 Explosive atmospheres—Part 3:Equipment protection by increased safety "e" GB/T 3836.3-2021 Explosive atmospheres—Part 3:Equipment protection by increased safety “e” GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 8013.1-2007 Anodic oxide coatings and organic polymer coatings on aluminium and its alloys—Part 1:Anodic oxide coatings GB/T 8013.1-2018 Anodic oxide coatings and organic polymer coatings on aluminium and its alloys—Part 1:Anodic oxide coatings GB/T 9239.1-2006 Mechanical vibration—Balance quality requirements for rotors in a constant(rigid)state—Part 1:Specification and verification of balance tolerances GB/T 9239.2-2006 Mechanical vibration—Balance quality requirements for rotors in a constant(rigid) state—Part 2:Balance errors GB/T 9239.12-2021 Mechanical vibration—Rotor balancing—Part 12:Procedures and tolerances for rotors with flexible behaviour GB/T 9239.13-2023 Mechanical vibration—Rotor balancing—Part 13:Criteria and safeguards for the in-situ balancing of medium and large rotors GB/T 9239.14-2017 Mechanical vibration—Rotor balancing—Part 14:Procedures for assessing balance errors GB/T 9239.21-2019 Mechanical vibration—Rotor balancing—Part 21:Description and evaluation of balancing machines GB/T 9239.23-2022 Mechanical vibration—Rotor balancing—Part 23:Enclosures and other protective measures for the measuring station of balancing machines GB/T 9239.31-2023 Mechanical vibration—Rotor balancing—Part 31:Susceptibility and sensitivity of machines to unbalance GB/T 9239.32-2017 Mechanical vibration—Rotor balancing—Part 32:Shaft and fitment key convention GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings 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 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product GB/T 13560-2000 Materials for sintered neodymium iron boron permanent magnets GB/T 13560-2009 Materials for sintered neodymium iron boron permanent magnets GB/T 13560-2017 Sintered neodymium iron boron permanent magnets GB/T 17897-1999 Test of pitting corrosion resistance of stainless steels in the ferric chloride solution GB/T 17897-2016 Corrosion of metals and alloys—Corrosion test for pitting corrosion resistance of stainless steels in the ferric chloride solution AQ 1043-2007 Mining Product Safety Mark Identification JB/T 9000-2018 JBT 9000-2018 Hydraulic Couplings General Technical Conditions GB/T 9239.2-2025 Mechanical vibration—Rotor balancing—Part 2:Vocabulary GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 9239.11-2025 Mechanical vibration—Rotor balancing—Part 11:Procedures and tolerances for rotors with rigid behaviour