12inch RCD roller cut bit with ball bit used for air lift reverse circulation dr
详细信息
12inch RCD roller cut bit with ball bit used for air lift reverse circulation drilling bit 100mpa-200mpa rock formation
12inch RCD roller cut bit with ball bit used for air lift reverse circulation drilling bit 100mpa-200mpa rock formation
| 地址：天津市宝坻区马家店镇 |
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