China National Standards

China Technical specification C80~C100 GB Standards List

  •  China "Technical specification C80~C100" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39963-2021 Technical specification on C80~C100 concrete shaft lining applied in vertical freezing shaft
    立井冻结法凿井井壁应用C80～C100混凝土技术规程    		 China National Standards
    Technical specification C80~C100
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