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YB/T 4455-2015 Testing method of dendrite arm spacing in the continuous casting billet (USD) via email in 1 business day VALID
GB/T 227-1991 Tool steel method of hardenability test via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
ZB H 24001-1987 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 30834-2014 Standard test methods for rating and classifying inclusions in steel—Scanning electron microscope (USD) via email in 1-3 business day VALID
GB/T 36591-2018 Metallographic detection method for coatings on carbide products (USD) 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 (USD) via email in 1 business day ABOLISHED
GB/T 224-2008 Determination of depth of decarburization of steels (USD) via email in 1-3 business day ABOLISHED
GB/T 24178-2009 Macrostructure assessing method for solidification structure of continuous casting blank (USD) via email in 1-3 business day VALID
GB/T 5168-2020 Microstructure and macrostructure examination for titanium and titanium alloys (USD) via email in 1-5 business day TO BE VALID
GB/T 14999.2-2012 Test methods for superalloys - Part 2: Verification of transverse macro-structures and defect by etch (USD) via email in 1-3 business day VALID
GB 4163-1984 (USD) via email in 1-3 business day ABOLISHED
GB 11260-1989 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 33165-2016 Quantitative analysis method of centre segregation for high carbon wire rod (USD) via email in 1-3 business day VALID
YB/T 153-2015 Standard diagrams for macrostructure and defects in high quality structural steel continuous casting blank (USD) via email in 1 business day VALID
GB/T 31309-2020 Calculation of electron vacancy number in cast superalloys (USD) via email in 1-3 business day TO BE VALID
GB/T 7736-1987 Ultrasonic inspecting method for macro-structure and imperfection of steel (USD) via email in 1-3 business day ABOLISHED
YB 31-1964 via email in ABOLISHED please email coc@codeofchina.com for quotation
TB/T 2448-1993 (USD) 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 (USD) via email in 1-3 business day VALID
GB/T 24177-2009 Standard test methods for characterizing duplex grain sizes (USD) via email in 1-3 business day VALID
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