Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 230.2-2012 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines 330.0 via email in 1~3 business day valid
GB/T 18449.2-2012 Metallic materials—Knoop hardness test—Part 2:Verification and calibration of testing machines 270.0 via email in 1~3 business day valid
GB/T 4340.3-2012 Metallic Vickers hardness test - Part 3 : Calibration of hardness 210.0 via email in 1~3 business day valid
GB/T 16826-2008 Electro-hydraulic servo universal testing machines 240.0 via email in 1~3 business day valid
GB/T 230.3-2012 Metallic materials - Rockwell hardness test - Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) 210.0 via email in 1~3 business day valid
JB/T 8285-1999 Reference blocks of shore hardness 90.0 via email in 1~3 business day valid
JB/T 9374-1999 Specifications for rotary bending fatigue testing machines 90.0 via email in 1~3 business day valid
GB/T 17394.3-2012 Metallic materials - Leeb hardness test - Part 3: Calibration of reference blocks 270.0 via email in 1~3 business day valid
JB/T 8612-1997 180.0 via email in 1~3 business day to be abolished
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