DB32/T 3816-2020 Technical specification for pipeline irrigation in paddy field

GB/T 4357-1989 Carbon spring steel wires GB/T 4357-2009 Cold-drawn non-alloy steel wire for springs GB/T 4357-2022 Cold-drawn unalloyed steel wire for springs GB 5084-1992 Standards for irrigation water quality GB 5084-2005 Standards for irrigation water quality GB/T 6111-2003 Thermoplastics pipes for the conveyance of fluids-Resistance to internal pressure—Test method GB/T 9112-2000 Types and parameters for steel pipe flanges GB/T 9112-2010 Types and parameters for steel pipe flanges GB/T 9113-2010 Integral steel pipe flanges GB/T 9113.1-2000 Integral steel pipe flanges with flat face or raised face GB/T 9113.2-2000 Integral steel pipe flanges with male and female face GB/T 9113.3-2000 Integral steel pipe flanges with tongue and groove face GB/T 9113.4-2000 Integral steel pipe flanges with ring-joint face GB/T 12241-2005 Safety valves—General requirements GB/T 12241-2021 Safety valves—General requirements GB 13294 GB/T 13663-2000 Polyethylene pipes for water supply GB/T 13663.1-2017 Polyethylene(PE)piping systems for water supply—Part 1:General GB/T 13663.2-2005 Polyethylene(PE)pipings systems for water supply—Part 2:Fittings GB/T 13663.2-2018 Polyethylene(PE)piping systems for water supply—Part 2:Pipes GB/T 13663.3-2018 Polyethylene(PE)piping systems for water supply—Part 3:Fittings GB/T 13663.5-2018 Polyethylene (PE) piping systems for water supply—Part 5:Fitness for purpose of the system GB/T 18689-2009 Agricultural irrigation equipment—Manually operated small plastics valves GB/T 18691.4-2011 Agricultural irrigation equipment—Irrigation valves—Part 4:Air valves GB/T 18691.4-2021 Agricultural irrigation equipment—Irrigation valves—Part 4:Air valves GB/T 30948-2014 Code of practice for technical management of pumping station GB/T 30948-2021 Code of practice for technical management of pumping station GB 50014-2006 Code for design of outdoor wastewater engineering GB/T 50123-2019 Standard for geotechnical testing method GB 50231-1998 General code for construction and acceptance of mechanical equipment installation engineering GB 50254-2014 Code for construction and acceptance of low-voltage apparatus Electric equipment installation engineering GB 50288-2018 Design standard for irrigation and drainage engineering SL 255 SL/T 317-2023 Pump station equipment installation and acceptance specifications SL/T 317-2105 Pump station equipment installation and acceptance specifications SL 317-2004 SL 317-2004 Specification for installation and acceptance of pumping stations SL 550-2012 Irrigation fertilizer dispenser basic parameters and technical specifications DB/T 32.1-2020 Technical requirements of instruments in network for earthquake monitoring—Underground fluid observation instruments—Part 1:Pressure instrument for water level GB 50014-2021 Code for design of outdoor wastewater engineering GB 50203-2011 Code for acceptance of constructional quality of masonry structures GB 50231-2009 General code for construction and acceptance of mechanical equipment installation engineering GB 50265-2022 Design code for pumping station GB 50268-2008 Code for construction and acceptance of water and sewerage pipeline works GB/T 50769-2012 Code for acceptance of water-saving irrigation engineering