Complaint
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
Casing Tube OD(mm) | Casing Tube ID(mm) | Reamed Dia(mm) | Casing Shoe ID(mm) | Polit bit Dia(mm) | Hammer Type | Drill Pipe (mm) |
108 | 95 | 118 | 80 | 70 | DHD3.5/QL30 | 76 |
114 | 101 | 128 | 90 | 80 | DHD3.5/QL30 | 76 |
127 | 114 | 141 | 100 | 90 | DHD3.5/QL30 | 76 |
140 | 124 | 154 | 110 | 98 | DHD340/QL40 | 76 |
146 | 126 | 160 | 114 | 102 | DHD340/QL40 | 76 |
168 | 148 | 182 | 132 | 120 | DHD350/QL50 | 76/89 |
178 | 158 | 192 | 142 | 130 | DHD350/QL50 | 76/89 |
183 | 163 | 198 | 152 | 138 | DHD350/QL50 | 89/114 |
194 | 174 | 210 | 164 | 148 | DHD360/QL60 | 89/114 |
219 | 199 | 235 | 184 | 170 | DHD360/QL60 | 89/114 |
245 | 225 | 261 | 210 | 192 | DHD380/QL80 | 114 |
273 | 253 | 293 | 238 | 219 | DHD380/QL80 | 114/127 |
325 | 305 | 348 | 294 | 270 | SD10/NUMA100 | 127 |
406 | 382 | 426 | 374 | 350 | SD12/NUMA125 | 140 |
The Concentric/Symmetric casing system product line includes the enhanced system with striking faces and extracting highly resistant.
In horizontal drilling, the friction between the soil and the casing can become very important and Symmetrix reinforced bits are designed to resist abrasion under these conditions.
These systems are targeted for drilling in leading which the cutting ring is recovered for reuse. They can also be used for drilling deep holes vertical when it is not necessary to use an inside diameter of annular cutting important.
Reinforced systems are available for tubing sizes ranging between 140 mm and 1220 mm (5 1/ 2 "and 48").
Quality warranty
Our products are made of high quality steel and all spares parts are inspected strictly before shipping.
Production time
within 15-25 days after receiving the advance payment or full payment.
Transportation
according to your requests.
Package
The material of packing is ply-wooden cases and pallet to avoid the damage in transportation.
