China National Standards

China lubricants—Four GB Standards List

  •  China "lubricants—Four" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 3142-2019 Standard test method for determination of load-carrying capacity of lubricants—Four-ball method
    润滑剂承载能力的测定 四球法    		 China National Standards
    lubricants—Four
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