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Step Drag Bits
Model: Sinodrills-12
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Sinodrills Step Drag Bits
Step drag bit: three wings step drag bit, four wings step drag bit;
Drag bits diameter: 76mm to 445mm;
Drag bits thread sizes: 2 3/8" API Reg, 3 1/2" API Reg, 4 1/2" API Reg, 6 5/8" API Reg, etc |
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Grouped control mechanism, quick to start up withair-on, water-on, air-off mechanism easy handle and maintain. Low noise, small ... | |  MAXDRILL Thread Button Bit
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Self drilling rock bolting accessories: bit, plate, coupling sleeves, nuts;... | |  Self Drilling Rock Bolt
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Sinodrills Self Drilling Rock Bolt
Self drilling rock bolts sizes: R25, R28, R32N, R32S, R38, R51N, R51L, T76N, T76S;
Thread standard: left thread and ... |
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