China National Standards

China Silica sand flour GB Standards List

  •  China "Silica sand flour" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 12214-2019 Silica sand and flour for investment casting
    熔模铸造用硅砂、粉     		China National Standards
    Silica sand flour
    English PDF
    GB/T 12214-1990 Silica sand and flour for investment casting
    熔模铸造用硅砂、粉    		 China National Standards
    Silica sand flour
    English PDF

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