|Place of Origin:||China|
|Minimum Order Quantity:||1 PC|
|Delivery Time:||5 working days|
|Supply Ability:||6000 PCS per year|
|Standard:||API Spec 7-1||Model:||Nc38|
Drill Collar is mainly used for providing drill bit with required drilling pressure, ensuring pull force transmitted to drill pipe and centralize the drill bit. According to API Spec 7-1 specifications, the material quality is 4145H that's after heat-treatment, thread hardening treatment and phosphating to better antiseize. It also can be produced upon customers' requirements.
The parameter of drill collar according to API Spec 7-1 specifications.