Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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DB37/T 3589-2019 Remanufacturing Test sample preparation method for bonding strength of laser cladding layer and substrate via email in business day valid
DB37/T 3590-2019 Remanufacturing Test method for bonding strength of laser cladding layer and substrate via email in business day valid
GB 10323-1988 Methods for chemical analysis of ferrochromium and silicochromium-The potentiometric titration method for the determination of chromium content 30.0 via email in 1~3 business day abolished
GB 11170-1989 Method for photoelectric emission spectroscopic analysis of stainless steel 75.0 via email in 1~3 business day abolished
GB 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis 60.0 via email in 1 business day superseded
GB 223.10-1991 Methods for chemical analysis of Steel and alloy - the bronze iron separation - chrome azurol S photometric method for the determination of aluminium content via email in business day valid
GB 223.15-1982 Chemical Analysis of Iron, Steel and Alloy - The Determination of Titanium by Gravimetric Method 50.0 via email in 1 business day abolished
GB 223.17-1989 Methods for chemical analysis of iron steel and alloy; The diantipyrylmethane photometric method for the determination of titanium content 60.0 via email in 1~3 business day valid
GB 223.18-1982 Chemical analysis of iron, steel and alloy--The determination of copper by thiosulfate-iodide method 184.0 via email in 1~3 business day superseded
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 30.0 via email in 1 business day valid
GB 223.20-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the potentiometric titration method 184.0 via email in 1~3 business day superseded
GB 223.22-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the nitroso-R salt photometric method 184.0 via email in 1~3 business day valid
GB 223.24-1982 Chemical analysis of iron, steel and alloy--The determination of nickel by the dimethylglyoxime-trichloromethane extraction photometric method 184.0 via email in 1~3 business day superseded
GB 223.25-1984 Methods for chemical analysis of iron, steel and alloy--The dimethylglyoxime gravimetric method for the determination of nickel content via email in business day superseded
GB 223.26-1989 Methods for chemical analysis of iron steel and alloy; The thiocyanate direct photometric method for the Determination of molybderum content 45.0 via email in 1~3 business day superseded
GB 223.28-1989 Methods for chemical analysis of iron steel and alloy; The D-denzoinoxime gravimetric method for the determination of molybdenum content 105.0 via email in 1~3 business day valid
GB 223.29-1984 Methods for chemical analysis of iron,steel and alloy;The xylenol orange photometric method for determination of lead content after carrier precipitation 30.0 via email in 1~3 business day superseded
GB 223.3-1988 Methods for chemical analysis of iron, steel and alloy; The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content 40.0 via email in 1 business day valid
GB 223.31-1984 Methods for chemical analysis of iron, steel and alloy--The distillation-molybdenum blue photometric method for the determination of arsenic content 184.0 via email in 1~3 business day valid
GB 223.32-1984 Methods for chemical analysis of iron, steel and alloy--The hypophosphite reduction-iodimetric method for the determination of arsenic content 184.0 via email in 1~3 business day superseded


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