JG/T 8-2016 Members of steel trusses

JG/T 8-1999 Quality standard of steel trusses JG/T 9-1999 Inspection and acceptance standard for steel trusses

GB/T 223.78-2000 Methods for chemical analysis of iron,steel and alloy—Curcumin spectrophotometric method for the determination of boron content GB/T 223.79-2007 Iron and steel—Determination of multi-element contents—X-ray fluorescence spectrometry(Routine method) GB/T 223.80-2007 Iron,steel and alloy—Determination of trace bismuth and arsenic contents—Hydride generation-atomic fluorescence spectrometric method GB/T 223.81-2007 Iron,steel and alloy—Determination of total aluminum and total boron contents—Microwave digestion-inductively coupled plasma mass spectrometric method GB/T 223.82-2007 Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method GB/T 223.82-2018 Steel and iron—Determination of hydrogen content—Thermal conductivity/infrared method after fusion under inert gas GB/T 223.83-2009 Steel and iron—Determination of high sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.84-2009 Steel and iron—Determination of titanium content—Diantipyrylmethane spectrophotometric method GB/T 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace GB/T 223.87-2018 Iron, steel and alloy—Determination of calcium and magnesium—Inductively coupled plasma mass spectrometric method GB/T 223.88-2019 Iron,steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method GB/T 223.89-2019 Iron,steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method GB/T 223.90-2021 Iron,steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method GB/T 223.91-2021 Iron,steel and alloy—Determination of copper—2,2′-Biquinoline spectrophotometric method GB/T 223.92-2023 Iron, steel and alloy—Determination of lanthanum, cerium, praseodymium, neodymium and samarium content—Inductively coupled plasma mass spectrometry GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method GB/T 232-1999 Metallic materials—Bend test GB/T 232-2010 Metallic materials—Bend test GB/T 232-2024 Metallic materials—Bend testing method GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 1228-1991 High strength bolts with large hexagon head for steel structures GB/T 1228-2006 High strength bolts with large hexagon head for steel structures GB/T 1229-1991 High strength large hexagon nuts for steel structures GB/T 1229-2006 High strength large hexagon nuts for steel structures GB/T 1230-1991 High strength plain washers for steel structures GB/T 1230-2006 High strength plain washers for steel structures GB/T 1231-1991 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures GB/T 1231-2006 Specifications of high strength bolts with large hexagon head,large hexagon nuts,plain washers for steel structures GB/T 1231-2024 High strength bolts with large hexagon head assemblies for steel structures GB/T 1591-1994 High strength low alloy structural steels GB/T 1591-2008 High strength low alloy structural steels GB/T 1591-2018 High strength low alloy structural steels GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB/T 3632-1995 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures GB/T 3632-2008 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures GB/T 5117-1995 Carbon steel covered electrodes GB/T 5117-2012 Covered electrodes for manual metal arc welding of non-alloy and fine grain steels GB/T 5118-1995 Low alloy steel covered electrodes GB/T 5118-2012 Covered electrodes for manual metal arc welding of creep-resisting steels GB/T 5293-1999 Carbon steel electrodes and fluxs for submerged arc welding GB/T 5293-2018 Solid wire electrodes,tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels GB/T 5780-2000 Hexagon head bolts—Product grade C GB/T 5780-2016 Hexagon head bolts—Product grade C GB/T 5780-2025 Fasteners—Hexagon head bolts—Product grade C GB/T 8110-1995 Welding wires for gas shielding arc welding of carbon and low alloy steels GB/T 8110-2008 Welding electrodes and rods for gas shielding arc welding of carbon and low alloy steel GB/T 8110-2020 Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels GB/T 11345-1989 Method for manual ultrasonic testing and classification of testing results for ferritic steel welds GB/T 11345-2013 Non-destructive testing of welds—Ultrasonic testing—Techniques,testing levels,and assessment GB/T 11345-2023 Non-destructive testing of welds—Ultrasonic testing—Techniques, testing levels and assessment GB 50205-2001 Code for acceptance of construction quality of steel structures