Spiral Drill Collars
Product Details
Based on API Spec.7and SY/T5144, the spiral drill collars are made of 4145H modified chromium molybdenum alloy steel. All threads are phosphated, copper zed or cold rolled. All threads machined with CNC Lathes Double shoulderd, including some special threads. The maximum outer diameter of drill collars can amount to 14 inch.
Spiral drill collars
Spiral drill collars are made of 4145H modified chromium molybdenum alloy steel.
Standard: API Spec 7
- manufacture Technique:Cold Rolled, Cold Rolled
- Welded Line Type:Spiral
- Technique:Cold Rolled
- Alloy Or Not:Is Alloy
- Place of Origin:China (Mainland)
- Country:China (Mainland)
- telephone:86-10-58205366
| Delivery Time: | 30 days |
| Package: | suitable for sea transportation |
| Supply Ability: | 1000 Piece/Pieces per Month |
| Minimum Order Quantity: | 1 Piece/Pieces |
| Payment Terms: | L/C,T/T |
| Port: | Tianjin Port |
| manufacture Technique: | Cold Rolled, Cold Rolled |
| Welded Line Type: | Spiral |
| Technique: | Cold Rolled |
| Alloy Or Not: | Is Alloy |
| Place of Origin: | China (Mainland) |
