JB/T 6932-2010 Bio-contact oxidation complete set of deal with the sewage

JB/T 6932-1993 Biological contact oxidation method, domestic sewage purifier

JB/T 6932-2020 Biological contact oxidation method and domestic sewage purifier

CECS 149 CECS 97 GB/T 12347-1996 Steel wire rope—Bending fatigue testing GB/T 12347-2008 Steel wire ropes—Bending fatigue testing GB/T 12347-2025 Steel wire ropes—Fatigue testing method GB 14554-1993 Emission standards for odor pollutants GB 15562.1 GB 16297 GB 50010-2010 Code for design of concrete structures GB 50014-2006 Code for design of outdoor wastewater engineering GB 50014-2021 Code for design of outdoor wastewater engineering GB 50069-2002 Structural design code for special structures of water supply and waste water engineering GB 50235-2010 Code for construction and acceptance of industrial metallic piping GB 50332-2002 Structural design code for pipelines of water supply and waste water engineering GB 8978-1996 GB/T 11893-1989 Water quality—Determination of total phosphorus— Ammonium molybdate spectrophotometric method GB/T 11901-1989 Water quality—Determination of suspended substance—Gravimetric method GB/T 11903-1989 Water quality—Determination of colority GB/T 11914-1989 Water quality—Determination of the chemical oxygen demand—Dichromate method GB/T 13306-1991 Plates GB/T 13306-2011 Plates GB/T 13922.1-1992 Performance test for water treatment equipment General rules GB/T 16488 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 2816-2002 Submersible pumps for deep well GB/T 2816-2014 Submersible pumps for deep well GB/T 2888-1991 Methods of noise measurement for fans, blowers compressors and Roots blowers GB/T 2888-2008 Methods of noise measurement for fans blowers compressors and Roots blowers GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 4219.1-2008 Unplasticized poly(vinyl chloride)(PVC-U) piping system for industrial applications—Part 1:Pipes GB/T 4237-2007 Hot rolled stainless steel plate, sheet and strip GB/T 5836.1-2006 Unplasticized poly (vinyl chloride) (PVC-U) pipes for soil and waste discharge inside buildings GB/T 5836.2-2006 Unplasticized poly (vinyl chloride) (PVC-U) fittings for soil and waste inside buildings GB/T 6388-1986 Transport package shipping mark GB/T 6920-1986 Water quality—Determination of pH value—Glass electrode method GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 709-1988 Dimensions, shape, weight and tolerances for hot-rolled plates and sheets GB/T 709-2006 Dimension,shape,weight and tolerances for hot-rolled steel plates and sheets GB/T 709-2019 Dimension,shape,weight and tolerance for hot-rolled steel strip,plate and sheet GB/T 7479-1987 Water quality—Determination of ammonium—Nessler's reagent colorimetric method GB/T 7481-1987 Water quality—Determination of ammonium—Spectrophotometric method with salicylic acid GB/T 7488-1987 Water quality—Determination of biochemical oxygen demand after 5 days(BOD5)—Dilution and seeding method 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 8923-1988 HJ/T 245-2006 Specifications for environmental protection product Suspension type stuffing HJ/T 246-2006 Specifications for environmental protection product Suspended media HJ/T 251-2006 Specifications for environmental protection product Roots blower HJ/T 262-2006 Environmental Protection Product Technical Requirements: Grating Water Purification Machine HJ/T 336-2006 Environmental Protection Product Technical Requirements: Submersible Sewage Pump HJ/T 347-2007 Water quality-Determination of fecal coliform-manifold zymotechnics and filter membrane HJ 347.1-2018 Water quality - Determination of Escherichia coli in feces - Filter method HJ 347.2-2018 Water quality: Determination of fecal coliform group using multiple-tube fermentation method JB 8939-1999 Water Pollution Prevention and Control Equipment Safety Technical Specification JB/T 2932-1999 Water treatment equipment technical specifications JB/T 81-2015 Sheet steel plate welding flanged steel pipe flange JB 81-1994 Convex Panel-Type Flat-Weld Steel Pipe Flanges JB/T 9568-2000 General Technical Requirements for Relays, Protection, and Automatic Devices in Power Systems