Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YB/T 5262-1993 Wires of permanent elastic alloy 3J53Y for wrist watch 75.0 via email in 1~3 business day superseded
GB/T 4187-1984 Tungsten rods 60.0 via email in 1~3 business day to be abolished
GB/T 31927-2015 Zinc and aluminum based coatings on steel sheets and strips― Determination of lead and cadmium contents―Inductively coupled plasma mass spectrometric method 140.0 via email in 1~3 business day valid
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 abolished
YB/T 4475-2015 Steel sheets and strips. Analysis of zinc-and alumnium-based metallic coatings. Glow-discharge optical-emission spectrometric method 500.0 via email in business day valid
YB/T 4220-2010 Vanadium pentoxide —Determination of sodium oxide and potaiumss oxide content—The inductively coupled plasmaatomic emission spectrometry 90.0 via email in 1~3 business day valid
GB/T 28898-2012 Evaluation of uncertainty in chemical composition analysis for metallurgical materials 1350.0 via email in 1~3 business day valid
YB/T 022-1992 45.0 via email in 1~3 business day abolished
GB/T 24234-2009 Cast iron—Determination of multi-element contents—Spark discharge atomic emission spectrometric method (Routine method) 150.0 via email in 1~3 business day valid
GB/T 223.72-2008 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric Method 130.0 via email in 1 business day valid
YB/T 5252-1993 Wires of 3J22 alloy for axle-centre technical requirement 15.0 via email in 1~3 business day abolished
GB/T 17616-1998 Unified Numbering System for Designations of Iron, Steel and Alloy 60.0 via email in 1 business day superseded
GB 223.66-1989 Methods for chemical analysis of iron, steel and alloy The thiocyanate-chlorpromazine hydrochloride-chloroform extraction photometric method for the determination of tungsten content 75.0 via email in 1~3 business day valid
GB/T 223.74-1997 Methods for chemical analysis of iron,steel and alloy The combustion gravimetric/gas-volumetric method for the determination of combined carbon content 40.0 via email in 1 business day valid
GB/T 17505-1998 Steel and Steel Products - General Technical Delivery Requirements 70.0 via email in 1 business day abolished
GB/T 20123-2006 Steel and iron—Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) 120.0 via email in 1 business day valid
GB/T 223.64-2008 Iron, Steel and Alloy - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method 100.0 via email in 1 business day valid
YB/T 5125-1993 Pig iron containing vanadium 15.0 via email in 1~3 business day abolished
GB/T 223.67-2008 Iron, Steel and Alloy - Determination of Sulfur Content - Methylene Blue Spectrophotometric Method 80.0 via email in 1 business day valid
GB/T 223.9-2008 Iron steel and alloy - Determination of aluminium content - Chrom azurol S photometric method 100.0 via email in 1 business day valid
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