China National Standards

China Valve steel superalloy GB Standards List

  •  China "Valve steel superalloy" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 12773-2021 Valve steel and superalloy bars for internal combustion engines
    内燃机气阀用钢及合金棒材    		 China National Standards
    Valve steel superalloy
    English PDF
    GB/T 12773-2008 Valve steel and superalloy bars for internal combustion engines
    内燃机气阀用钢及合金棒材    		 China National Standards
    Valve steel superalloy
    English PDF

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