GB/T 28742-2025 Technical specification for safety of sewage treatment equipment

GB/T 28742-2012 Sewage treatment equipment for prevention and treatment of water pollution

GB 2894-1996 Safety signs GB 2894-2008 Safety signs and guideline for the use GB 2894-2025 Safety colours and safety signs 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 3836.15-2000 Electrical apparatus for explosive gas atmospheres—Part 15:Electrical installations in hazardous areas (other than mines) GB/T 3836.15-2017 Explosive atmospheres—Part 15:Electrical installations design,selection and erection GB 3836.15-2024 Explosive atmospheres—Part 15:Specification of electrical installations design,selection and erection GB 4053.1-1993 Safety requirements for fixed steel vertical ladders GB 4053.1-2009 Safety requirements for fixed steel ladders and platform—Part 1:Steel vertical ladders GB 4053.1-2025 Safety requirements for fixed metal ladders and platform—Part 1:Vertical ladders GB 4053.2-1993 Safety requirements for fixed steel oblique ladders GB 4053.2-2009 Safety requirements for fixed steel ladders and platform—Part 2:Steel inclined ladders GB 4053.2-2025 Safety requirements for fixed metal ladders and platform—Part 2:Inclined ladders GB 4053.3-1993 Safety requirements for fixed industrial protective railings GB 4053.3-2009 Safety requirements for fixed steel ladders and platform—Part 3:Industrial guardrails and steel platform GB 4053.3-2025 Safety requirements for fixed metal ladders and platform—Part 3:Industrial guardrails and platform GB 4053.4-1983 Fixed steel industrial platform GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 4942-2021 Degrees of protection provided by the integral design of rotating electrical machines(IP code)—Classification GB 5226.1-2002 Safety of machinery—Electrical equipment of machines—Part 1:General requirements GB 5226.1-2008 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements GB/T 5226.1-2019 Electrical safety of machinery—Electrical equipment of machines—Part 1:General 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 8196-2003 Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards GB/T 8196-2018 Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards GB/T 12241-2005 Safety valves—General requirements GB/T 12241-2021 Safety valves—General requirements GB 12358-1990 Gas monitors and alarms for workplace atmosphere general technical requirements GB 12358-2006 Gas monitors and alarms for workplace—General technical requirements GB 12358-2024 Gas detection and alarm instruments for workplace—General technical requirements GB 17888.2-1999 Safety of machinery—Permanent means of access to machines and industrial plants—Part 2:Working platforms and gangways GB/T 17888.2-2008 Safety of machinery—Permanent means of access to machinery—Part 2:Working platforms and walkways GB/T 17888.2-2020 Safety of machinery—Permanent means of access to machinery—Part 2:Working platforms and walkways GB 17888.3-1999 Safety of machinery—Permanent means of access to machines and industrial plants—Part 3:Stairways,stepladders and guard-rails GB/T 17888.3-2008 Safety of machinery—Permanent means of access to machinery—Part 3:Stairs,stepladders and guard-rails GB/T 17888.3-2020 Safety of machinery—Permanent means of access to machinery—Part 3:Stairs,stepladders and guard-rails GB 17888.4-1999 Safety of machinery—Permanent means of access to machines and industrial plants—Part 4:fixed ladders GB/T 17888.4-2008 Safety of machinery—Permanent means of access to machinery—Part 4:Fixed ladders GB/T 17888.4-2020 Safety of machinery—Permanent means of access to machinery—Part 4:Fixed ladders GB/T 18153-2000 Safety of machinery—Temperatures of touchable surfaces—Ergonomics data to establish temperature limit values for hot surfaces GB/T 18153-2024 Safety of machinery—Safety data to establish temperature limit values for touchable hot surfaces GB/T 18717.1-2002 Ergonomic design for the safety of machinery—Part 1:Principles for determining the dimensions required for openings for whole-body access into machinery GB/T 18717.2-2002 Ergonomic design for the safety of machinery—Part 2:Principles for determining the dimensions required for openings for access of parts of the body into machinery GB 20936.1-2007 Electrical apparatus for the detection and measurement of flammable gases—Part 1:General requirement and test methods GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1:Performance requirements of detectors for flammable gases GB/T 20936.1-2022 Gas detectors for explosive atmospheres—Part 1:Performance requirements of detectors for flammable gases GB/T 21431-2008 Technical specifications for inspection of lightning protection system in building GB/T 21431-2015 Technical code for inspection of lightning protection system in building GB/T 21431-2023 Technical specification for inspection of lightning protection systems of buildings GB/T 22188.4-2023 Ergonomic design of control centres—Part 4:Layout and dimensions of workstations GB/T 39437-2020 Technical specification for lightning protection of water supply and drainage system GBZ 2.1 GBZ 2.2 GBZ/T 189.8 GBZ/T 189.9