Drill Collar

On enquiring, customers should specify :
1. Type (slick or spiral grooved)
2. Outside and inside diameters (O.D., I.D.)
3. Length
4. Connection size and type
5. Stress Relief Groove on pin and box ends
6. Special features i.e.; hardbanding (b

Drill Collar

Slick/Spiral Drill collar Sour Service Drill Collar Non-Magnetic Drill Collar

Drill collar Size: 3-1/8"OD to 12"OD

Materials: AISI 4145H or 4145HM

Available Length: 5ft up to 45ft

Specification: API Spec