YB 4085-1992 Metal material bundler

GB 3081 GB 4173 YB 3220.1 YB 3220.2 YB 3220.3 YB 3220.4 YB 3220.5 YB 3220.6 YB 3220.8 YB 3220.11 YB 3220.12 JB 8 GB/T 343-1994 Low carbon steel wire for general uses GB/T 786.1-1993 Fluid power systems and components—Graphic symbols and circuit diagrams—Part 1:Graphic symbols GB/T 786.1-2009 Fluid power systems and components—Graphic symbols and circuit diagrams—Part 1:Graphic symbols for conventional use and data-processing applications GB/T 786.1-2021 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 1:Graphical symbols GB/T 786.2-2018 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 2:Circuit diagrams GB/T 786.3-2021 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 3:Symbol modules and connected symbols in circuit diagrams GB/T 2346-2003 Fluid power systems and components-Nominal pressures GB/T 3766-2001 Hydraulic fluid power—General rules relating to systems GB/T 3766-2015 Hydraulic fluid power—General rules and safety requirements for systems and their components GB/T 3767-1996 Acoustics—Determination of sound power levels of noise sources using sound pressure—Engineering method in an essentially free field over a reflecting plane GB/T 3767-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Engineering methods for an essentially free field over a reflecting plane GB/T 4064-1983 General guide for designing of electrical equipment to satisfy safety requirements GB/T 7932-2003 Pneumatic fluid power—General rules relating to systems GB/T 7932-2017 Pneumatic fluid power—General rules and safety requirements for systems and their components GB/T 7935-2005 Hydraulic fluid power—General requirements for hydraulic components YB 3220.7-1987 Bao Steel Second High Furnace Equipment Manufacturing General Technical Conditions for Forgings GB/Z 161-2026 Guidance on social responsibility for food enterprises