China National Standards

China Microstructure examination medium GB Standards List

  •  China "Microstructure examination medium" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 38720-2020 Microstructure examination of medium-carbon steel and medium-carbon alloy structural steel after quenching
    中碳钢与中碳合金结构钢淬火金相组织检验    		 China National Standards
    Microstructure examination medium
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