GB/T 8409-1999
Abolished
Standards
GB/T 4700.4-1998
Abolished
GB/T 4700.4-1998 Methods for chemical analysis of calcium-silicon—The phosphomolybdenum blue photometric method for the determination of phosphorus content
GB/T 4700.5-1998
Abolished
GB/T 4700.5-1998 Methods for chemical analysis of calcium-silicon—The infrared absorption method for the determination of carbon content
GB/T 4700.7-1998
Abolished
GB/T 4700.7-1998 Methods for chemical analysis of calcium-silicon—The infrared absorption method and the combustion-potassium iodate titration method for the determination of sulfur content
GB/T 717-1998
Abolished
GB/T 717-1998 Pig iron for steelmaking
GB/T 8220.10-1998
Abolished
GB/T 8220.10-1998 Methods for chemical analysis of bismuth—Determination of tin content—Coprecipitation with beryllium-photometric method
GB/T 8220.11-1998
Abolished
GB/T 8220.11-1998 Methods for chemical analysis of bismuth—Determination of mercury content—Cold vapour atomic absorption spectrometric method
GB/T 8220.1-1998
Abolished
GB/T 8220.1-1998 Methods for chemical analysis of bismuth—Determination of copper content—Bis-acetaldehyde-oxalydihydrazone photometric method
GB/T 8220.12-1998
Abolished
GB/T 8220.12-1998 Methods for chemical analysis of bismuth—Determination of nickel content—Electrothermal atomic absorption spectrometric method
GB/T 8220.13-1998
Abolished
GB/T 8220.13-1998 Methods for chemical analysis of bismuth—Determination of silver and cadmium content—Electrothermal atomic absorption spectrometric method
GB/T 8220.2-1998
Abolished
GB/T 8220.2-1998 Methods for chemical analysis bismuth—Determination of iron content—1,10-phenanthroline photometric method
GB/T 8220.3-1998
Abolished