1.Good wear-resistance.
2.Tungstencarbide hardfacting on tooht surgace.
3.Better steeland longer stable drilling hours.
4.Optimizedprofile and higher rate of penetration .
5.High stability .
Features
1. Combined circulation(Threeside jets and one central jet).
2. Shirttail and leg enteringedge hardfacing.
3. Shirttail protection withTCI.
4. Enhanced teeth hardfacing.
5. Inserts on gage surface.
6. Additional gage row.
No | IADC Code | Recommendation | ||
WOB(KN/mm) | Rotary Speed(rpm) | |||
1 | 117 | 0.35~0.8 | 240~80 | |
2 | 127 | 0.35~0.9 | 240~70 | |
3 | 437 447 | 0.35~0.9 | 240~70 | |
4 | 517 527 | 0.35~1.0 | 220~60 | |
5 | 537 547 | 0.45~1.0 | 220~50 | |
6 | 617 627 | 0.45~1.1 | 200~50 | |
7 | 637 | 0.5~1.1 | 180~40 | |
Ouradvantage
1.Good quality,reasonableprice.
2.ISO9001:2000, ,APIcertified.
3.Timely delivery.
2.ISO9001:2000, ,APIcertified.
3.Timely delivery.
