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Product Description
Thread drill rods and accessories for underground tunneling and rock drilling operations
The threaded drill tools for underground tunneling and rock drilling operations include threaded column-tooth drill bits, reaming drill bits, thread drill rods, guide drill rods, connecting sleeves and shanks.

| Thread column tooth bit | Thread drill bit | R32、R35、TR35 |
| Diameter of drill bit | 41mm、42mm、43mm、45mm、48mm、51mm、54mm、57mm、64mm、76mm | |
| Reaming drill bit | Thread specification | R32、R35、TR35 |
| Diameter of reaming drill bit | 76mm、89mm、102mm、127mm | |
| Connection sleeve | Thread specification | R25、R28、R32、R38、T38 |
| Product diameter | 35mm、40mm、45mm、56mm、57mm、59mm | |
| Product length | 150mm、160mm、170mm、177mm、180mm、190mm、195mm | |
| Thread drill rod | Thread specification | R23、R25、R28、TR28、R32、TR35、T35 |
| Specification of drill rod | H22、H25、H28、H32、H35、D32、D36、D39 | |
| Length of drill rod | 610mm、915mm、1220mm、1525mm、1750mm、1830mm、2095mm、2175mm、2300mm、2475mm、2700mm、2875mm、2975mm、3090mm、3400mm、3500mm、3700mm | |
| Guide drill rod | Thread specification | T35 |
| Specification of drill rod | D48 | |
| Length of drill rod | 1220mm、1525mm、1830mm |
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