GB/T 37565-2019 General specification of screen machine for water supply and drainage service

GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings SJ 20893 GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 1220-1992 Stainless steel bars GB/T 1220-2007 Stainless steel bars 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 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip 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 3797-2005 Electrical control assemblies GB/T 3797-2016 Electrical control assemblies 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 4237-1992 Hot rolled stainless steel sheets and plates GB/T 4237-2007 Hot rolled stainless steel plate, sheet and strip GB/T 4237-2015 Hot rolled stainless steel plate,sheet and strip GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings GB/T 12770-2002 Welded stainless steel tubes for machine structures GB/T 12770-2012 Welded stainless steel tubes for mechanical structures GB/T 13306-1991 Plates GB/T 13306-2011 Plates 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 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system JB/T 4297-2021 Pump product painting technical specification JB/T 4297-2008 Pump product coating specification for technology JB/T 5936-2018 General technical specification for mechanical machining parts of engineering machinery JB/T 5936-1991 Engineering machinery - Machining parts general technical specification JB/T 5943-2018 Engineering Machinery Welding Components General Technical Specification JB/T 4297-1992 Pump Product Painting Technology Specification GB 50014-2006 Code for design of outdoor wastewater engineering JB/T 5943-1991 General technical specification for welding parts of construction machinery GB 50014-2021 Code for design of outdoor wastewater engineering CJJ 60-2011 Technical specification for operation,maintenance and safety of municipal wastewater treatment plant GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 12770-2025 Welded stainless steel tubes for mechanical structures