MT/T 537-1996 Coal drill bit -- the People's Republic of China coal industry standard

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2020-01-08

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1996

MT/T 688-1997 General Technical Conditions for Coal Mine Anchor Rig -- the People's Republic of China Coal Industry Standard

MT/T 516.5-1995 Drilling tools for hydraulic rock drills in coal mines-the People's Republic of China coal industry standard

MT/T 688-1997 General Technical Conditions for Coal Mine Anchor Rig -- the People's Republic of China Coal Industry Standard

MT/T 516.5-1995 Drilling tools for hydraulic rock drills in coal mines-the People's Republic of China coal industry standard

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