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GB/T 3658-2022 Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens $345.00 via email in 1~5 business day valid
GB/T 37598-2019 Inspection of non-metallic inclusions in steel—Blue fracture test method $80.00 via email in 1~3 business day valid
GB/T 37787-2019 Metallic materials—Determination of microporosity—Fluorescence method $140.00 via email in 1~3 business day valid
GB/T 37789-2019 Test methods for cruciform joints of steel structures $315.00 immediately valid
GB/T 37793-2019 Quantitative analysis of dendritic segregation in steel billets $220.00 via email in 1~3 business day valid
GB/T 38223-2019 Determination of ferrite content in austenitic stainless steel castings $170.00 via email in 1~3 business day valid
GB/T 38786-2020 Testing method for cleanliness of magnesium and magnesium alloy ingots $165.00 via email in 1~3 business day valid
GB/T 38804-2020 Metallic materials—Creep-fatigue test method $160.00 via email in 1~3 business day valid
GB/T 38980-2020 Test method for artificial defect sizes of zirconium tube flaw detection comparison samples $105.00 via email in 1~3 business day valid
GB/T 39042-2020 Measurement of the magnetic properties of electrical steels by means of a single sheet tester—H-coil method $255.00 via email in 1~3 business day valid
GB/T 39077-2020 Test methods for detecting detrimental phases in lean duplex austenitic-ferritic stainless steels $350.00 via email in 1~5 business day superseded
GB/T 40281-2021 Determination of content of nonmetallic inclusions in steel—Extremum analytical method $375.00 via email in 1~5 business day valid
GB/T 40296-2021 Practical superconducting wires—Twist pitch measurement method of Nb-Ti and Nb3Sn composite superconductors $315.00 via email in 1~5 business day valid
GB/T 40304-2021 Determination of content of nonmetallic inclusions in steel—Billet full section method $225.00 via email in 1~3 business day valid
GB/T 40404-2021 Slag material—Measurement of melting temperature—High temperature metallographic method $165.00 via email in 1~3 business day valid
GB/T 41079.1-2021 Test methods for physical properties of liquid metals—Part 1:Determination of density $120.00 via email in 1~3 business day valid
GB/T 41079.2-2022 Test methods for physical properties of liquid metals—Part 2: Determination of electrical conductivity $120.00 via email in 1~3 business day valid
GB/T 41079.3-2024 Test methods for physical properties of liquid metals—Part 3: Determination of viscosity $210.00 via email in 1~3 business day to be valid
GB/T 41737-2022 Aluminum matrix composites-Test method for volume fraction of SiC-Dissolution method $105.00 via email in 1~3 business day valid
GB/T 41739-2022 Test method for dimensional stability of metal matrix composites—Thermal-cold cycling method $165.00 via email in 1~3 business day valid
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