| Packaging Details: | wooden box; steel box; or as your requirements |
|---|---|
| Delivery Detail: | within 7 days after conform order |
We have a Export Department, which specialize in the export of various products made by ourselves including Drill bits, Drill Pipe, TCI tricone bits, PDC bits, PDC Diamond drill bits, roller rock bits, core bits, all size bits in oilfield, water well drilling, mineral and geological and so on. During the twenty years, we have built good business relationships with customers abroad, such as America, Japan, Korea, Germany and so on.
Advantage:
1 Size range from 3 7/8 to 26'
2 Excellent quality and reasonable price
3 API&ISO approved
Specification:
| Size | 8 1/2 (215.9mm) |
| IADC | 537 |
| Bearing Type | rubber sealed slide bearing |
| WOB (kN/ mm) | 0.50~. 05 |
| RPM (r/ min) | 110~40 |
| Applicable Formations | Median soft formations and harder abrasive formations with low compressive strength, such as argillite, anhydrite, cotton rock, sandstone, etc. |
Packing:

Payment:
T/ T and L/ C are acceptable
Available products:

| bit size (inc) | bit size (mm) | bit type |
| 8 3/8 | 212.7 | HJ437G; HJ517GL; HJT517GL; HJ537GL; HJT537GH |
| 8 1/2 | 215.9 | HJT117; HJT137; HJ417; HJ437; HJT447G; HJ517G; HJ517GL; HJS517G; HJ537G; HJT537GH; HJS537GL; HJ547G |
| 8 3/4 | 222.3 | HJT117, HJT537G |
| 9 1/2 | 241.3 | HJ437; HJ517G; HJT517GL; HJ537G; HJT537GL; HJ617G; HJT617GH; HJ637G; HJT637GH |
| 9 5/8 | 244.5 | HJ537G |
| 9 7/8 | 250.8 | HJT117; HJ417; HJ43 |
| 10 5/8 | 269.9 | HJT127; HJT137; HJT517G |
| 12 1/4 | 311.2 | HJT117; HJT117G; HJ127; HJT127G; HJ137; HJ417; HJ437; HJ517G; HJS517G; HJ537G; HJS537G; HJ617G; HJ637G |
| 17 1/2 | 444.5 | HJ517G; HJ527G; HJ537G |
I am glad to be service to you.
