China coalmine GB Standards Search Result |
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GB/T 41163-2021 Specification for process design of enhancing coal seam permeability by water jet in coalmine 煤矿井下煤层水射流冲击增透工艺设计规范 - 英文版 |
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GB 50383-2016 Code for design of the fire protecting sprinkling system in underground coalmine 煤矿井下消防、洒水设计规范 - 英文版 |
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GB/T 28556-2012 Flameproof and intrinsically safe controller with frequency converter for coalmine ventilation fan 煤矿通风机用隔爆兼本质安全型变频调速控制器 - 英文版 |
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