*GB/T 223.1-1981 Determination of carbon content in iron,steel and alloy
*GB/T 223.2-1981 Determination of sulphur content in iron,steel and alloy
*GB/T 223.12-1991 Methods for chemical analysis of iron, steel and alloy The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium 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/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 223.25-1994 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime gravimetric method for the determination of nickel content
*GB/T 223.26-1989 Methods for chemical analysis of iron, steel and alloy--The thiocyanate direct photometric method for the determination of molybdenum content
*GB/T 223.60-1997 Methods for chemical analysis of iron,steel and alloy The perchloric acid dehydration gravimetric method for the determination of silicon content
*GB/T 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/T 230-1991 Metallic materials－Rockwell hardness test
*GB/T 231-1984 Metallic materials--Brinell hardness test
*GB/T 5611-1998 Foundry terminology
*GB/T 5612-1985 Code for representing cast iron
*GB/T 6060.1-1997 Roughness comparison specimens Cast surfaces
*GB/T 6414-1999 Castings--System of dimensional tolerances and machining allowances
*GB/T 11351-1989 Mass tolerances for castings
*GB/T 15056-1994 Evaluation method on cast surface roughness