China National Standards

China Metallographic test spheroidal GB Standards List

  •  China "Metallographic test spheroidal" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 9441-2021 Metallographic test method for spheroidal graphite cast iron
    球墨铸铁金相检验    		 China National Standards
    Metallographic test spheroidal
    English PDF
    GB/T 9441-2009 Metallographic test for spheroidal graphite cast iron
    球墨铸铁金相检验    		 China National Standards
    Metallographic test spheroidal
    English PDF

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