China National Standards

China Spot drill GB Standards List

  •  China "Spot drill " GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 17112-2022 Spot drill {译}
    定心钻    		 China National Standards
    Spot drill
    English PDF
    GB/T 17112-1997 Spot drills
    定心钻    		 China National Standards
    Spot drill
    English PDF

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