DB32/T 4648-2024 Road steel bridge maintenance technical specifications

GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings GB/T 8923.2-2008 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 2:Preparation grades of previously coated steelsubstrates after localized removal of previous coatings GB/T 8923.3-2009 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 3:Preparation grades of welds,edges and other areas with surface imperfections GB/T 8923.4-2013 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 4:Initial surface conditions,preparation grades and flash rust grades in connection with high-pressure water jetting CB/Z 67-2008 Carbon arc welding process requirements JTG/T H21 JTG/T J21-2011 Specification for Inspection and Evaluation of Load-bearing Capacity of Highway Bridges JTG/T J22 JTG/T J23 JT/T 722-2023 Highway bridge steel structure anti-corrosion coating technical specifications JT/T 722-2008 Specifications of protective coating for highway bridge steel structure JTG/T 3651 JTG 5120 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 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 51367-2019 Standard for design of strengthening steel structure