GB/T 25020.1-2025 Pole for overhead contact system of electrified railways—Part 1:Steel pole

GB/T 25020.1-2010 Steel pole for overhead contact system of electrified railway—Part 1:Lattice pole GB/T 25020.3-2016 Steel pole for pole for overhead contact system of electrified railways—Part 3:Steel tube pole GB/T 25020.4-2016 Steel pole for overhead contact system of electrified railways—Part 4:H section pole

GB/T 41-2000 Hexagon nuts—Product grade C GB/T 41-2016 Hexagon nuts,style 1—Product grade C GB/T 95-2002 Plain washers—Product grade C GB/T 95-1985 Plain washers--Product grade C GB/T 97.1-2002 Plain washers—Product grade A GB/T 470-1997 Zinc ingots GB/T 470-2008 Zinc ingots GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 706-1988 Hot-rolled beam steel—Dimensions, shape, weight and tolerances GB/T 706-2008 Hot rolled section steel GB/T 706-2016 Hot rolled section steel 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 711-1988 Hot-rolled quality carbon structural steel plates and wide strips GB/T 711-2008 Hot-rolled quality carbon structural steel plates、sheets and wide strips GB/T 711-2017 Hot-rolled quality carbon structural steel plates sheets and strips 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 2694-2018 Specification of manufacturing for transmission line tower 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 3098.2-2000 Mechanical properties of fasteners—Nuts—Coarse thread GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 3274-1988 Carbon structural and low alloy steel rolled plates and strips GB/T 3274-2007 Hot-rolled plates and strips of carbon structural steels and high strength low alloy structural steels GB/T 3274-2017 Hot-rolled plates,sheets and strips of carbon structural steels and high strength low alloy structural steels 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 5267.3-2008 Fasteners—Hot dip galvanized coatings 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 5782-2000 Hexagon head bolts GB/T 5782-2016 Hexagon head bolts GB/T 5782-2025 Fasteners—Hexagon head bolts GB/T 6170-2000 Hexagon nuts,style 1 GB/T 6170-2015 Hexagon nuts,style 1 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 10045-2001 Carbon steel flux cored electrodes for arc welding GB/T 10045-2018 Tubular cored electrodes for non-alloy and fine grain steels GB 12470-1990 Fluxes for the submerged arc welding of low alloy steel GB/T 12470-2003 Low-alloy steel electrodes and fluxes for submerged arc welding GB/T 12470-2018 Solid wire electrodes,tubular cored electrodes and electrode/flux combinations for submerged arc welding of creep-resisting steels GB/T 13912-2002 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods GB/T 13912-2020 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods GB/T 17493-1998 Low alloy steel flux cored electrodes for arc welding GB/T 17493-2008 Low alloy steel flux cored electrodes for arc welding GB/T 17493-2018 Tubular cored electrodes for creep-resisting steels GB/T 34199-2017 Hot-rolled H section steel for electrified railway pillars GB/T 39279-2020 Wire electrodes,wires,rods and deposits for gas shielded arc welding of creep-resisting steels GB 50205-2001 Code for acceptance of construction quality of steel structures GB 50205-2020 Standard for acceptance of construction quality of steel structures GB 50661-2011 Code for welding of steel structures