China National Standards

China Throwing type backfilling Industry Standards English PDF List


  •  China "Throwing type backfilling" Industry Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    NB/T 51018-2014 Throwing-type backfilling technology with solid materials in working face specifications
    采煤工作面固体抛投式充填方法
    China Energy industry Standards
    Throwing type backfilling

    English PDF

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