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By certification 
Name: PDC non-coring Bit, Drag bit
Brand: SDTOPS
Model: D3B113
Size: 56~214mm
Matrix material: Steel
Life time: 300m~500m
Application: Geological exploration, coalfield mining, water well drilling , etc.
Applicable formation: Soft and medium hard rocks, like Sandstone, Shale, Limestone, Conglomerate, Mable, etc.
Brand: SDTOPS
Model: D3B113
Size: 56~214mm
Matrix material: Steel
Life time: 300m~500m
Application: Geological exploration, coalfield mining, water well drilling , etc.
Applicable formation: Soft and medium hard rocks, like Sandstone, Shale, Limestone, Conglomerate, Mable, etc.
