*GB/T 223.5-1997 Methods for chemical analysis of iron,steel and alloy The reduced molybdosilicate spectrophotometric method for the determination of acid-soluble silicon content
*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/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 223.28-1989 Methods for chemical analysis of iron, steel and alloy. The α-benzoin oxime gravimetric method for the determination of molybdenum content
*GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy The neutral titration method for the determinaion of nitrogen content after distillation separation
*GB/T 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/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 223.68-1997 Methods for chemical analysis of iron,steel and alloy The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
*GB/T 223.69-1997 Methods for chemical analysis of iron,steel and alloy The gas- volumetric method after combustion in the pipe furnace for the determination of carbon content
*GB/T 223.71-1997 Methods for chemical analysis of iron,steel and alloy The gravimetric method after combustion in the pipe furnace for the determination of carbon content
*GB/T 228-1987
*GB/T 231-1984 Metallic materials--Brinell hardness test
*GB/T 4334.5-1990 Stainless steels—Method of copper sulphate-Sulphuric acid corrosion test
*GB/T 6397-1986 Metallic materials--Test pieces for tensile testing
*JB 4708-2000 Welding procedure qualification for steel pressure vessels
*JB 4730-1994 Nondestructive testing of pressure vessels
*YB/T 5148-1993 Metal-methods for estimating the average grain size

*JB 4728-2000 Stainless steel forgings for pressure vessels
*JB 4728-2000 Stainless steel forgings for pressure vessels
*JB 4728-2000 Stainless steel forgings for pressure vessels
*JB 4728-2000 Stainless steel forgings for pressure vessels
*JB 4728-2000 Stainless steel forgings for pressure vessels