| Product name | 12 1/4" kingdream rock bit rotary tricone drill steel geological exploration equipment oil well drilling bits |
| Size | 3 inch~36inch |
| Model Number | HJ114-637 |
| Bearing type | rubber seal and metal seal both available |
| Thread | 2 3/8"~7 5/8'' API REG.PIN |
| Gauge protection | gauge protection |
| WOB | 0.70~1.20KN/mm |
| RPM | 70~40r/min |
| Application formation | High compressive strength, medium hard, thick hard interlayer, such as hard shale, limestone, sandstone, dolomite, etc. |
| Weight | 40 kg |
| MOQ | 1 |
| Standards | SY/T5164 |




Table of classification of formation hardness and bit selection
| IADC Code | Diamond Bit Code | Formation Description | Rock Type | Strength (Mpa) | ROP (m/h) |
|---|---|---|---|---|---|
| 111/124 | M/S112~M/S223 | Very soft formation with low compressive strength. | Clay, Siltstone, sandstone | <25 | >20 |
| 116/137 | M/S222~M/S323 | Soft formation with low compressive strength and high drillability. | Clay rock, Marl, Lignite, sandstone | 25~50 | 10~20 |
| 417/527 | M/S323~M/S433 | Medium soft to medium formation with low compressive strength. | Clay, Marl, Sandstone, Siltstone, Anhydrite | 50~75 | 5~15 |
| 517/537 | M322~M443 | Medium to hard formation with high compressive strength. | Mudstone, Dark rock, shale | 75~100 | 2~6 |
| 537/617 | M422~M444 | Medium hard: hard and dense formation, medium abrasiveness. | Dark rock, Hard shale, Sandstone, Dolomite | 100~200 | 1.5~3 |
We are a professional supplier of drilling tools, including tricone bits, PDC tricone bits, Hole openers, single cone bits and more. With years of study and refining of technology, we have succeeded in the field of product research with proprietary intellectual property rights. We have made major breakthroughs in analogue simulation of bottom-hole flow fields, profile optimization, and the design of insert arrangements.
Our products offer superior service characteristics and wide application ranges, mainly used for oil and gas, mining, geothermal, and construction industries. Our manufacturing has achieved industrialization and serialization, ensuring reliable quality for international markets including the United States, England, Canada, Brazil, Italy, Saudi Arabia, Korea, India, and Poland.
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