--> Top hammer drilling T38,T45,T51,GT60,ST58 drifter bits for blasting hole.-bit-drill pipe-Zhejiang Pulanka Rock Tools Co., Ltd.

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Top hammer drilling T38,T45,T51,GT60,ST58 drifter bits for blasting hole.


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Reaming drill bit R32 R38 with 76mm,89mm,102mm,127mm size for tunnel drill.

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