China National Standards

China Bi block concrete Industry Standards English PDF List

  •  China "Bi block concrete" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    TB/T 3397-2015 Bi-block concrete sleeper for CRTS ballastless track
    crts双块式无砟轨道混凝土轨枕    		 China Railway & Train Standards
    Bi block concrete
    English PDF

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