Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 24177-2009 Standard test methods for characterizing duplex grain sizes 315.0 via email in 1~3 business day valid
GB/T 4296-1984 Magnesium alloy wrought products--Microstructure--Inspection method 180.0 via email in business day abolished
GB/T 32790-2016 Methods for evaluating the weld quality of seam welds in aluminium and aluminium alloy extrusion 100.0 via email in 1~3 business day valid
GB/T 1979-2001 STANDARD diagrams for macrostructure and defect of structural steels 60.0 via email in 1 business day valid
GB 226-1991 Etch test for macrostructure and defect of steels 40.0 via email in 1 business day abolished
YS/T 347-2004 Copper and copper alloys - Estimation of average grain size 150.0 via email in 1~3 business day valid
GB/T 17169-1997 Test method for the surface quality of polished silicon wafers and epitaxial wafers by optical-reflection 380.0 via email in 1~3 business day abolished
YS/T 449-2002 Copper and copper alloys inspction method of microstructure for cast and wrought products 120.0 via email in 1~3 business day valid
TB/T 2450-1993 Metallographic Inspection for ZG 230-450 Cast Steel 255.0 via email in 1~3 business day valid
YB 4052-1991 Metallographic inspection for high Ni-Cr infinite chilled centrifugal cast iron 150.0 via email in 1~3 business day abolished
GB/T 11343-1989 Ultrasonic angle beam examination by the contact method 75.0 via email in 1~3 business day abolished
TB/T 2451-1993 Metallographic Inspection for Non-metallic Inclusion in Cast Steel 180.0 via email in 1~3 business day valid
GB/T 13298-2015 Inspection methods of microstructure for metals 160.0 via email in 1 business day valid
GB/T 14999.2-2012 Test methods for superalloys - Part 2: Verification of transverse macro-structures and defect by etch 170.0 via email in 1~3 business day valid
GB/T 5193-1985 Method of ultrasonic inspection for wrought titanium and titanium alloys products 260.0 via email in business day superseded
GB/T 14979-1994 Eutectic carbide of steel - Micrographic method using Standard diagrams 375.0 via email in 1~3 business day valid
GB/T 13299-1991 Steel - Determination of Microstructure 40.0 via email in 1 business day valid
GB/T 10561-2005 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams 75.0 via email in 1 business day valid
GB/T 18876.3-2008 Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 3: Determining the carbides rating in steels by automatic image analysis and stereology 255.0 via email in 1~3 business day valid
GB/T 224-2008 Determination of depth of decarburization of steels 80.0 via email in 1 business day valid
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