GB/T 19435-2004 Aluminium-tin alloy and steel bimetal strip for plain bearings

YB/T 5364-2006 Aluminium-tin alloy and steel bimetal strip for plain bearings

GB/T 230.1-2004 Metallic Rockwell hardness test—Part1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method GB/T 230.2-2002 Metallic rockwell hardness test—Part 2:Verification and calibration of hardness testers(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.2-2012 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines GB/T 230.2-2022 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines and indenters GB/T 230.3-2002 Metallic rockwell hardness test—Part 3:Calibration of hardness reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2012 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2022 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks GB/T 231.1-2002 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2018 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 247-1997 General rule of acceptance, package, mark and certification for steel plates(sheets) and strips GB/T 247-2008 General rule of package,mark and certification for steel plates(sheets)and strips GB/T 247-2025 General rules of package, mark and certification for steel plate, sheet and strip GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 6987.1-2001 Aluminium and aluminium alloys—Determination of copper content—Electrolytic grarmetric method GB/T 6987.2-2001 Aluminium and aluminium alloys—Determination of copper content—Oxalyldihydrazide spectrophotometric method GB/T 6987.3-2001 Aluminium and aluminium alloys—Determination of copper content—Falme atomic absorption spectrometric method GB/T 6987.4-2001 Aluminium and aluminium alloys—Determination of iron content—Orthopenanthroline photometric method GB/T 6987.5-2001 Aluminium and aluminium alloys—Determination of silicon content—Gravimetric method GB/T 6987.6-2001 Aluminium and aluminium alloys—Determination of silicon content—Molybdenum blue spectrophotometric method GB/T 6987.7-2001 Aluminium and aluminium alloys—Determination of manganese content—Potassium periodate spectrophotometric method GB/T 6987.8-2001 Aluminium and aluminium alloys—Determination of zine content—EDTA titrimetric method GB/T 6987.9-2001 Aluminium and aluminium alloys—Determination of zine content—Flame atomic absorption spectrometric method GB/T 6987.10-2001 Aluminium and aluminium alloys—Determination of tin content—Phenyl fluorone spectrophotometric method GB/T 6987.11-2001 Aluminium and aluminium alloys—Determination of lead content—Flame atomic absorption spectrometric method GB/T 6987.12-2001 Aluminium and aluminium alloys—Determination of titanium content—Diantipyrylmethane spectrophotometric method GB/T 6987.13-2001 Aluminium and aluminium alloys—Determination of vanadium content—N-benzoyl-Nphenylhydroxylamine spectrophotometric method GB/T 6987.14-2001 Aluminium and aluminium alloys—Determination of nickel content—Dimethylglyoxime spectrophotometric method GB/T 6987.15-2001 Aluminium and aluminium alloys—Determination of nikel content—Flame atomic absorption spectrometric method GB/T 6987.16-2001 Aluminium and aluminium alloys—Determination of magnesium content—CDTA titrimetric method GB/T 6987.17-2001 Aluminium and aluminium alloys—Determination of magnesium content—Flame atomic absorption spectrometric method GB/T 6987.18-2001 Aluminium and aluminium alloys—Determination of chromium content—Flame atomic absorption spectrometric method GB/T 6987.19-2001 Aluminium and aluminium alloys—Determination of zirconium content—Xylenol orange spectro photometric method GB/T 6987.20-2001 Aluminium and aluminium alloys—Determination of gallium content—Butyrhodamine B spectrophotometric method GB/T 6987.21-2001 Aluminum and aluminum alloys—Determination of calcium content—Flame atomic absorption spectrometric method GB/T 6987.22-2001 Aluminium and aluminium alloys—Determination of beryllium content—SCR spectrophotometric method GB/T 6987.23-2001 Aluminium and aluminium alloys—Determination of antimony content—Potassium iodide spectrophotometric method GB/T 6987.24-2001 Aluminium and aluminium alloys—Determination of the cerium subgroup of rare earth elements content—Tribromoarsenazo spectrophotometric method GB/T 6987.25-2001 Aluminum and aluminum alloys—Determination of cadmium content—Flame atomic absorption spectrometric method GB/T 6987.26-2001 Aluminium and aluminium alloys—Determination of lithium content—Flame atomic absorption spectrometric method GB/T 6987.27-2001 Aluminium and aluminium alloys—Determination of boron content—Ion selective electrode method GB/T 6987.28-2001 Aluminium and aluminium alloys—Determination of strontium content—Flame atomic absorption spectrometric method GB/T 6987.29-2001 Aluminium and aluminium alloys—Determination of copper content—2,9-Dimethyl-1,10-phenanthroline spectrophotometric method GB/T 6987.30-2001 Aluminium and aluminium alloys—Determination of chromium content—Diphenyicarbazide spectrophotometry method after extraction GB/T 6987.31-2001 Aluminium and aluminium alloys—Determination of titanium content—Hydrogen peroxide spectrophotometric method GB/T 6987.32-2001 Aluminium and aluminium alloys—Determination of total rare earth contents—Rare earth oxalate gravimetric method GB/T 15391-1994 Dimensions, shape and tolerances for cold-rolled steel strips with a width less than 600mm GB/T 15391-2010 Dimension,shape and tolerances for cold-rolled steel strips with a width less than 600 mm GB/T 18326-2001 Plain bearings—Multilayer materials for thin-walled plain bearings GB/T 18326-2022 Plain bearings—Multilayer materials for thin-walled plain bearings JB/T 7925.2