CJ/T 303-2008 Steady pressure compensation type non-negative pressure water supply devices

GB/T 3797-2005 Electrical control assemblies GB 50268-1997 GB 150-1998 Steel pressure vessels GB/T 150.1-2011 Pressure vessels—Part 1:General requirements GB/T 150.1-2024 Pressure vessels—Part 1:General requirements GB/T 150.2-2011 Pressure vessels—Part 2:Materials GB/T 150.2-2024 Pressure vessels—Part 2:Materials GB/T 150.3-2011 Pressure vessels—Part 3:Design GB/T 150.3-2024 Pressure vessels—Part 3:Design GB/T 150.4-2011 Pressure vessels—Part 4:Fabrication,inspection and testing,and acceptance GB/T 150.4-2024 Pressure vessels—Part 4:Fabrication,inspection and testing,and acceptance GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB 755-2000 Rotating electrical machines—Rating and performance GB/T 755-2008 Rotating electrical machines—Rating and performance GB/T 755-2019 Rotating electrical machines—Rating and performance GB/T 755.2-2003 Methods for determining losses and efficiency of rotating electrical machinery from tests(excluding machines for traction vehicles) GB/T 3047.1-1995 Series of basic dimensions of panels, rack and cabinets for vertical increment of 20mm GB/T 3214-1991 Methods for measurement of capacity of pump GB/T 3214-2007 Methods for measurement of capacity of pump 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 5657-1995 Technical specifications for centrifugal pumps—Class Ⅲ GB/T 5657-2013 Technical specifications for centrifugal pumps(Class Ⅲ) GB/T 12771-2000 Welded stainless steel pipes for liquid delivery GB/T 12771-2008 Welded stainless steel pipes for liquid delivery GB/T 12771-2019 Welded stainless steel pipes for fluid transport 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 CJ/T 160-2002 Backflow preventers CJ/T 160-2010 Double check valve backflow prevention assembly JB/T 3085-1999 JB/T 4711-2003 Coating and packing for pressure vessels transport GB/T 755-2025 Rotating electrical machines—Rating and performance GB 50236-2011 Code for construction and acceptance of field equipment, industrial pipe welding engineering 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/Z 150-2025 Guide for magnetizing behaviour of permanent magnets