| Quality | Premium | Sizes | Various |
| Material | Steel | OEM | Supported |
| Logo | Supported |
| Model | Outer diameter (mm) | Inner diameter (mm) | Reamed diameter (mm) | Inner diameter of casing shoe (mm) | Hammer type | Drill pipe (mm) |
|
TW127
|
127 | 113 | 145 | 100 | 4 inch hammer | 76 |
|
TW146
|
146 | 130 | 159 | 115 | 4 inch hammer | 76 |
|
TW168
|
168 | 148 | 180 | 138 | 5 inch hammer | 76/89 |
|
TW178
|
178 | 158 | 190 | 148 | 5 inch hammer | 76/89 |
|
TW183
|
183 | 163 | 195 | 152 | 5 inch hammer | 76/89 |
|
TW194
|
194 | 174 | 210 | 160 | 6 inch hammer | 89/114 |
|
TW219
|
219 | 199 | 237 | 187 | 6 inch hammer | 89/114 |
|
TW245
|
245 | 225 | 265 | 211 | 8 inch hammer | 114 |
|
TW273
|
273 | 253 | 308 | 236 | 8 inch hammer | 114 |
|
TW323
|
323 | 303 | 360 | 282 | 10 inch hammer | 114 |
No.9 Mulanli Road, High-Tech Development Zone, Zhengzhou