*GB 223.3-1988 Methods for chemical analysis of iron, steel and alloy; The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
*GB/T 223.4-1988 Methods for chemical analysis of iron, steel and alloy--The volumetric method for determination of manganese content by ammonium nitrate oxidation
*GB/T 223.11-1991 Methods for chemical analysis of iron,steel and alloy The ammonium persulfate oxidation volumetric method for the determination of chromium content
*GB/T 223.16-1991 Methods for chemical analysis of iron, steel and alloy The chromotropic acid photometric method for the determination of titanium content
*GB 223.17-1989 Methods for chemical analysis of iron steel and alloy; The diantipyrylmethane photometric method for the determination of titanium content
*GB/T 223.18-1994 Methods for chemical analysis of iron, steel and alloy The sodium thiosulfate separation iodimetric method for the determination of copper content
*GB 223.19-1989 Methods for chemical analysis of iron steel and alloy; The neocuproine-chloroform extraction photometric method for the determination of copper content
*GB/T 223.23-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime spectrophotometric method for the determination of nickel content
*GB/T 223.24-1994 Methods for chemical analysis of iron, steel and alloy.The extraction seperation-The dimethylglyoxime spectrophotometric method for the determination of nickel content
*GB 223.26-1989 Methods for chemical analysis of iron steel and alloy; The thiocyanate direct photometric method for the Determination of molybderum content
*GB 223.27-1984
*GB 223.36-1985
*GB 223.37-1989 Methods for chemical analysis of iron steel and alloy; The indophenal blue photometric methods for the determination of nitrogen content after distillation separation
*GB/T 223.40-1985 Methods for chemical analysis of iron,steel and alloy; The anion-exchange separation-sulphochlorophenol S photometric method for the determination of niobium content
*GB 223.54-1987 Methods for chemical analysis of iron,steel and alloy; The flame atomic absorption spectrophotometric method for the determination of nickel content
*GB 223.58-1987 Methods for chemical analysis of iron,steel and alloy; The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
*GB 223.59-1987 Methods for chemical analysis of iron,steel and alloy; The reduced molybdoantimonyl phosphoric acid photometric method for the determination of phosphorus content
*GB 223.60-1987
*GB 223.63-1988 Methods for chemical analysis of iron, steel and alloy; The sodium(potassium)periodate photometric method for the determination of manganese content
*GB 223.67-1989 Methods for chemical analysis of iron, steel and alloy The reducing distillation-methylene blue photometric method for the determination of sulfur content
*GB 223.69-1989
*GB/T 223.72-1991 Methods for chemical analysis of iron, steel and alloy The alumina chromatographic separation-barium sulfate gravimetric method for the determination of sulphur content
*GB/T 223.76-1994 Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric method for the determination of vanadium content
*GB/T 229-1994 Metallic materials-Charpy notch impact test
*GB 247-1988
*GB 709-1988 Dimensions, shape, weight and tolerances for hot-rolled plates and sheets
*GB/T 2970-1991 Thicker steel plate—Method for ultrasonic inspection
*GB 4338-1984

*GB 713-1997 Carbon and low alloy steel plates for boilers carbon and alloy steel plates for boilers
*GB 713-1997 Carbon and low alloy steel plates for boilers carbon and alloy steel plates for boilers
*GB 713-1997 Carbon and low alloy steel plates for boilers carbon and alloy steel plates for boilers