China National Standards

China angles60°、90°and GB Standards List

  •  China "angles60°、90°and" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 4258-2004 Parallel shanks countersinks for angles60°、90°and 120° inclusive
    60°、90°、120°直柄锥面锪钻    		 China National Standards
    angles60°、90°and
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