Leading manufacture of varies tugsten carbide(TC)stepped drag bits, such as 2-wings drag bit, 3-wings drag bit, 4-wings etc.
With ISO certificate &quality control
Stepped drag bit is a drill bit uses in soft formations such as sand, clay or some soft rock.
Type: Chevron and Step type
Wings: 2, 3 and 4 wings
Size: 3" to 24"
Thread: 2 3/8", 3 1/2", 4 1/2", 6 5/8" API Reg. Pin
Type: Chevron and Step type
Wings: 2, 3 and 4 wings
Size: 3" to 24"
Thread: 2 3/8, 3 1/2, 4 1/2, 5 1/2, 6 5/8 API Reg. Pin
API three wings chevron step tungsten carbide drag bit/step T. C drag bit
About products
The Drag Bits can penetrate softer formations such as stiff clays and mudstones very quickly. Usually used for construction or other site investigation projects. It has two types: Step Type and Chevron Type.
About us
ZhongCheng offers various diamond reaming shells, they are T. C reaming shells and surface set diamond reaming shells. PDC anchor shank drill bit select top grade PDC cutter, the bit has stable performance and impact resistance, could be applied to rock formation f≤ 12, like conglomerate, granite, limestone
Our products advantage
| Size | Type Pin | Wt. (lbs.) |
| 1 3/4"" ~ 2 1/2"" | AW, A-Rod | 2 |
| 2 5/8"" ~ 2 7/8"" | AW, A-Rod | 2 1/2 |
| 2 3/4"" ~ 3 1/4"" | 3THD/4THD N-ROD 2"" IF | 4 |
| 3 3/8"" ~ 3 3/4"" | 3THD/4THD N-ROD 2"" IF | 4 1/2 |
| 3 7/8"" ~4 3/4"" | 2 3/8"" API Pin | 6 |
| 4 7/8"" ~ 5 1/8 | 2 3/8"" API Pin | 7 |
| 5 1/4"" ~5 1/2"" | 2 3/8"" API Pin | 8 |
| 4 5/8"" ~ 5"" | 2 7/8"" API Pin | 10 |
| 5 1/8"" ~5 1/2"" | 2 7/8"" API Pin | 11 |
| 5 5/8"" ~ 6 1/4"" | 3 1/2"" API Pin | 18 |
| 6 1/2"" ~ 6 3/4"" | 3 1/2"" API Pin | 19 |
| 7"" ~ 7 1/2"" | 3 1/2"" API Pin | 21 |
| 7 5/8"" ~ 8" | 3 1/2"" API Pin | 23 |
| 8 1/2 | 4 1/2 | 25 |
| 9"-12 1/4 | 6 5/8 | 30-45 |
| The thread can be male/female and any type can be customized-made. | ||
