Non-magnetic Drill Collar
Non-magnetic drill collar are manufactured from integral non magnetic alloy steel accroding to API spec7 and SY/T5144. All thread can be phosphated, copperised or cold worked. All thread are machined with CNC Lathes-double-shouldered and special thread.
| Product: | oilfield API non-magnetic drill collar |
| Size: | 3 1/8"-11" |
| Delivery time: | 30 days after receive the deposit. |
| Standard | API Spec 7-1 |
| Payment Term: | 30% advance by T\T; Balance pay against shipping documents or irrevocable LC at sight |
