GB/T 12761-2010 Raise-boring machines

GB/T 12761-1991 Raise-boring machines

GB/T 11352-2009 Carbon steel castings for general engineering purpose 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 5777-1996 Seamless steel pipe and tubing—Methods for ultrasonic testing GB/T 5777-2008 Seamless steel pipe and tubing methods for ultrasonic testing GB/T 5777-2019 Automated full peripheral ultrasonic testing of seamless and welded(except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections GB/T 6402-1991 Steel forgings—Method for ultrasonic examination GB/T 6402-2008 Steel forgings—Method for ultrasonic testing GB/T 6402-2024 Method for ultrasonic testing of steel forgings GB/T 7935-2005 Hydraulic fluid power—General requirements for hydraulic components GB/T 9065.1-2015 Hydraulic hose fittings—Part 1:Hose fittings with O-ring face seal ends GB/T 9065.2-2010 Connections for hydraulic fluid power and general use—Hose fittings—Part 2:Hose fittings with 24°cone connector ends GB/T 9065.3-2020 Connections for hydraulic fluid power—Hose fittings—Part 3:Flange ends GB/T 13306-1991 Plates GB/T 13306-2011 Plates GB/T 13325-1991 Noise emitted by machinery and equipment—Guidelines for the preparation of test codes of engineering grade requiring noise measurements at the operator's or bystander's position GB/T 22512.2-2008 Petroleum and natural gas industries—Rotary drilling equiment—Part 2:Threading and gauging of rotary shouldered thread connections GB/T 25706-2010 Code of designations for mining machinery products MT 244.1-1997 Car coupler of decauville for mine connecting chain MT 244.2-1997 Car coupler of decauville for mine—Connecting bolt MT/T 244.1-2020 MT/T 244.1-2020 Coal mine narrow-gauge vehicle connector connecting chain MT/T 244.2-2020 coal mine narrow-gauge vehicle connector connection plug insertion socket MT 818.1-2009 Coal mine electric cables - Part 1: General provisions for mobile soft cables JB/T 5000.3-2007 Heavy Machinery General Technical Conditions Part 3: Welding Parts JB/T 5000.3-1998 Heavy Machinery General Technical Conditions - Welding Parts MT 818.1-1999 Flame-resistant Cable for Coal Mines - Part 1: General Provisions for Mobile Flame-resistant Soft Cables for Coal Mines MT 818.5-1999 Flame-resistant cables for coal mines - Part 1: Movable flame-resistant flexible cables for coal mines - Part 5: Movable soft cables with rated voltage of 0.66/1.14kV and below MT/T 244.1-2005 Car coupler of decauville for mine connecting chain MT/T 244.2-2005 Car coupler of decauville for mine-Connecting bolt MT/T 818.5-2009 Coal mine electric cables - Part 5: Movable soft cables with rated voltage of 0.66/1.14kV and below GB/T 9065.2-2025 Connections for hydraulic fluid power—Hose fittings—Part 2:24° cone connectors