Hunan New Diamond Construction Machinery Co., Ltd. - YueYang, China


DTH Drill Bits Low Air Pressure for CIR series Description DTH bit is the tool cutting rocks, and subject to severe stress from the strikin ...
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 135

Description The use of high quality steel and hard alloy as raw materials, through a special heat treatment process, ball tooth bit can reach under ...
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 142

Description The use of high quality steel and hard alloy as raw materials, through a special heat treatment process, ball tooth bit can reach und ...
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 140