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Symmetric Overburden Drilling
BESTLINK
We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, top hammer button bits, coupling, cross bits, drill rods located in Xiamen,Fujian,China.
Product specifications: Concentric/Symmetric Casing overburden Drilling System with Ring Bit
Outer Dia. of Casing Tube | Inner Dia. of Casing Tube | Reamed Dia. | Min. Inner Dia. of Casing Shoe | Drill Pipes | Max. Outer Dia. of Normal Bit |
mm | Mm | mm | mm | mm | mm |
108 | 93-99 | 118 | 86 | 76 | 77 |
114 | 101-103 | 127 | 91 | 76 | 82 |
127 | 114-116 | 136 | 101 | 76 | 92 |
140 | 124-127 | 152 | 117 | 76 | 105 |
146 | 127-132 | 154 | 117 | 76 | 105 |
168 | 149-155 | 184 | 140 | 76,89 | 125 |
178 | 159-165 | 194 | 150 | 76,89 | 140 |
193 | 173-180 | 206 | 164 | 89,114 | 150 |
219 | 199-206 | 234 | 184 | 89,114 | 165 |
244 | 224-231 | 260 | 210 | 114 | 190 |
273 | 251-257 | 305 | 240 | 114,127 | 220 |
323 | 301-310 | 348 | 284 | 127 | 255 |
406 | 382-388 | 440 | 364 | 140 | 340 |
457 | 433-439 | 488 | 413 | 140 | 385 |
508 | 484-490 | 538 | 464 | 140 | 440 |
We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, top hammer button bits, coupling, cross bits, drill rods located in Xiamen,Fujian,China.
Product specifications: Concentric/Symmetric Casing overburden Drilling System with Ring Bit
Outer Dia. of Casing Tube | Inner Dia. of Casing Tube | Reamed Dia. | Min. Inner Dia. of Casing Shoe | Drill Pipes | Max. Outer Dia. of Normal Bit |
mm | Mm | mm | mm | mm | mm |
108 | 93-99 | 118 | 86 | 76 | 77 |
114 | 101-103 | 127 | 91 | 76 | 82 |
127 | 114-116 | 136 | 101 | 76 | 92 |
140 | 124-127 | 152 | 117 | 76 | 105 |
146 | 127-132 | 154 | 117 | 76 | 105 |
168 | 149-155 | 184 | 140 | 76,89 | 125 |
178 | 159-165 | 194 | 150 | 76,89 | 140 |
193 | 173-180 | 206 | 164 | 89,114 | 150 |
219 | 199-206 | 234 | 184 | 89,114 | 165 |
244 | 224-231 | 260 | 210 | 114 | 190 |
273 | 251-257 | 305 | 240 | 114,127 | 220 |
323 | 301-310 | 348 | 284 | 127 | 255 |
406 | 382-388 | 440 | 364 | 140 | 340 |
457 | 433-439 | 488 | 413 | 140 | 385 |
508 | 484-490 | 538 | 464 | 140 | 440 |