T/CECS 10309-2023 Integrated intelligent blockage well

GB/T 4942-2021 Degrees of protection provided by the integral design of rotating electrical machines(IP code)—Classification GB/T 5836.1-1992 Unplasticized polyvinyl chloride pipes for drainage in buildings GB/T 5836.1-2006 Unplasticized poly (vinyl chloride) (PVC-U) pipes for soil and waste discharge inside buildings GB/T 5836.1-2018 Unplasticized poly(vinyl chloride)(PVC-U)pipes for soil and waste discharge inside buildings GB/T 8237-1987 Liquid unsaturated polyester resin for glass fiber reinforced plastics GB/T 8237-2005 Liquid unsaturated polyester resin for fiber reinforced plastics GB/T 8237-2025 Liquid unsaturated polyester resin for fiber reinforced plastics GB/T 8804.3-2003 Thermoplastic pipes—Determination of tensile properties—Part 3:Polyolefin pipes GB/T 9124.1-2019 Steel pipe flanges—Part 1:PN designated GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings GB/T 9647-2003 Thermoplastics pipes—Determination of ring stiffness GB/T 9647-2015 Thermoplastics pipes—Determination of ring stiffness GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 13306-1991 Plates GB/T 13306-2011 Plates GB/T 13657-1992 Bisphenol—A epoxy resins GB/T 13657-2011 Bisphenol-A epoxy resin GB/T 14152-2001 Thermoplastics pipes—Determination of resistance to external blows—Round-the-clock method GB/T 17889.2-1999 Ladders—Part 2:Requirements,testing,marking GB/T 17889.2-2012 Ladders—Part 2:Requirements,test,marking GB/T 17889.2-2021 Ladders—Part 2:Requirements,test,marking GB/T 18042-2000 Thermoplastics pipes—Determination of creep ratio GB/T 18370-2001 Glass fibre woven roving GB/T 18370-2014 Glass fibre woven roving GB 18613-2020 Minimum allowable values of energy efficiency and values of efficiency grades for motors GB/T 20878-2007 Stainless and heat-resisting steels—Designation and chemical composition GB/T 20878-2024 Stainless steels—Designation and chemical composition GB/T 21238-2007 Glass fiber reinforced plastics mortar pipes GB/T 21238-2016 Glass fiber reinforced plastics mortar pipes GB/T 21873-2008 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials GB/T 21873-2025 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials GB/T 23300-2009 Parallel plane disc gate valves GB/T 24674-2009 Waste submersible motor-pumps GB/T 24674-2021 Waste submersible motor-pumps GB/T 28575-2012 Specification for YE3 Series(IP55)super-high efficiency three-phase induction motor(Frame size 80～355) GB/T 28575-2020 Specification for YE3 series(IP55) three-phase induction motors(Frame size 63~355) GB/T 35451.2-2018 Polypropylene(PP)structure-wall piping systems for underground drainage and sewerage—Part 2:Polypropylene spirally enwound structure-wall pipes GB/T 39385-2020 Plastics piping and ducting systems—Thermoplastics pipes—Determination of ring flexibility GB 50014-2006 Code for design of outdoor wastewater engineering GB 50014-2021 Code for design of outdoor wastewater engineering CJ/T 257-2014 Aluminium alloy and stainless steel sluice gate CJ/T 409-2012 Technical requirement of fiber-glass reinforced plastic septic tank JB/T 8691-2013 Valveless knife gate valve JB/T 8691-1998 Shuttle type knife gate valve JB/T 13601-2018 JBT 13601-2018 Hydraulic Drive Device Technical Specification 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 JG/T 160-2004 Expansion and undercut building anchors for use in concrete JG/T 160-2017 Mechanical anchors for use in concrete