Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 14999.3-2012 Test methods for superalloys - Part 3: Verification of longitudinal fracture of bars 170.0 via email in 1~3 business day valid
GB/T 32790-2016 Methods for evaluating the weld quality of seam welds in aluminium and aluminium alloy extrusion 80.0 via email in 1~3 business day valid
QJ 3290-2007 Representative Collection of Metallographs on Zl114a Casting Aluminium Alloys 345.0 via email in 1~5 business day valid
TB/T 2450-1993 Metallographic Inspection for ZG 230-450 Cast Steel 255.0 via email in 1~3 business day superseded
GB/T 15711-1995 Steel Products - Method for Etch Test of Tower Sample 20.0 via email in 1 business day superseded
GB/T 226-2015 Test method for macrostructure and defect of steel by etching 80.0 via email in 1 business day valid
GB/T 15711-2018 Inspection of non-metallic inclusions of steel—Etching test method of tower samples 105.0 via email in 1~3 business day valid
GB/T 13305-2008 Micrographic method for determining area content of the α-phases in stainless steels 270.0 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
YB 28-1959 via email in business day abolished
HB 6623.1-1992 Determination Method for Transformation Temperature of Titanium Alloy Β- Differential Thermal Analysis Method 135.0 via email in 1~3 business day valid
GB/T 13298-2015 Inspection methods of microstructure for metals 130.0 via email in 1 business day valid
GB/T 34474.1-2017 Determination of banded structure of steel-Part 1:Micrographic method using standards diagrams 405.0 via email in 1~5 business day valid
HB 5201-1982 Metallographic Inspection Standard for Overburning of Wrought Aluminum Alloy 165.0 via email in 1~3 business day valid
DL/T 652-1998 Technical guidelines for metallurgic replica 105.0 via email in 1~3 business day valid
GB/T 24177-2009 Standard test methods for characterizing duplex grain sizes 315.0 via email in 1~3 business day valid
GB/T 3246.1-2012 Inspection method for structure of wrought aluminum and aluminum alloy products Part 1 : Inspection method for microstructure 315.0 via email in 1~3 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 4296-1984 Magnesium alloy wrought products--Microstructure--Inspection method 180.0 via email in business day abolished
GB/T 14145-1993 Test method for stacking fault density of epitaxial layers of silicon by interference contrast microscopy 180.0 via email in 1~3 business day abolished
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