GB/T 28743-2025 Sewage treatment vessel equipment—General technical requirements

GB/T 28743-2012 Sewage treatment vessel equipment—General technical requirements

GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 1040.2-2006 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.2-2022 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1447-2005 Fiber-reinforced plastics composites—Determination of tensile properties GB/T 1449-2005 Fibre-reinforced plastic composites—Determination of flexural properties GB/T 3857-1987 Test method for chemical resistance of glass fiber reinforced thermosetting plastics GB/T 3857-2005 Test method for chemical resistance of glass fiber reinforced thermosetting plastics GB/T 3857-2017 Test method for chemical resistance of glass fiber reinforced thermosetting plastics GB/T 6388-1986 Transport package shipping mark 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 GB/T 9124.1-2019 Steel pipe flanges—Part 1:PN designated GB/T 9124.2-2019 Steel pipe flanges—Part 2:Class designated GB/T 9174-1988 General specification for transport packages of general cargo GB/T 9174-2008 General specification for transport packages of general cargo GB/T 9969-2008 General principles for preparation of instructions for use of industrial products GB 9969.1-1998 General principles for preparation of instructions for use of industrial products GB/T 11547-1989 Plastics—Determination of the effects of liquid chemicals, including water GB/T 11547-2008 Plastic—Methods of test for the determination of the effects of immersion in liquid chemicals 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/T 13306-1991 Plates GB/T 13306-2011 Plates 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 25197-2010 Welded static non-pressurized thermoplastic tanks GB/T 30790.5-2014 Paints and varnishes—Corrosion protection of steel structures by protective paint systems—Part 5: Protective paint systems GB/T 50726 JC/T 587-2012 Glass fiber-reinforced thermosetting resin vertical storage tank for corrosion resistance JC/T 587-1995 Fiber-reinforced plastic tank using woven fabric to enhance its strength JC/T 718-2012 Glass fiber-reinforced thermosetting resin corrosion-resistant horizontal storage tank NB/T 47003.1 SJ 20893