GB/T 14173-1993 Specification for hydraulic flat steel gates

GB/T 14173-2008 Specification for manufacture,installation and acceptance of steel gate in hydraulic and hydroelectric engineering

GB 981 GB 1300 GB 3281 GB 5676 GB 9794 GB 9795~9796 GB 9795~9796 GB 10706 JB 8 JB 1152 JB 3092 GB 146.1-1983 Rolling stock gauge for standard gauge railways GB 146.1-2020 Gauge for standard gauge railways—Part 1:Rolling stock gauge GB 146.2-1983 Structure gauge for standard gauge railways GB 146.2-2020 Gauge for standard gauge railways—Part 2:Structure gauge GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 324-1988 Welds-symbolic representation on drawings GB/T 324-2008 Weld symbolic representation on drawings GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 983-1995 Stainless steel covered electrodes GB/T 983-2012 Covered electrodes for manual metal arc welding of stainless and heat-resisting steels GB/T 985-1988 Basic forms and sizes of weld grooves for gas welding manual arc welding and gas-Shielded arc welding GB/T 985.1-2008 Recommended joint preparation for gas welding,manual metal arc welding,gas-shield arc welding and beam welding GB/T 985.2-2008 Recommended joint preparation for submerged arc welding GB/T 985.3-2008 Recommended joint preparation for gas-shield arc welding on aluminium and its alloys GB/T 985.4-2008 Recommended joint preparation for welding on clad steels GB/T 986-1988 Basic forms and sizes of weld grooves for submerged arc welding GB/T 1720-2020 Circle-drawing test of coating films GB/T 1731-1993 Determination of flexibility of films GB/T 1731-2020 Determination of flexibility of coating and putty films GB/T 3323-1987 Methods for radiographic inspection and classification of radiographs for fusion welded butt joints in steel GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials GB/T 3323.1-2019 Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film GB/T 3323.2-2019 Non-destructive testing of welds—Radiographic testing—Part 2:X-and gamma-ray techniques with digital detectors GB/T 3375-1994 Welding terminology 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 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 GB/T 191-2025 Graphical symbols marking for handling and storage of packages