MOQ | 2 pieces |
Port | Tianjin |
Packaging | in bundle |
Lead Time | 35 days |
Name | Drill Collar | Material | 4145H |
Length | 9150mm | Size | 3 1/8" - 11" |
Brand | KANGYA | Standard | API 7-1 |
There are different kinds of drill collars,including round drill collar,spiral drill collar,non-magnetic drill collar,square drill collar and so on.Ordinary drill collar is the circular cross section, the center has a water hole,the wall thickness is larger,the nozzle is smaller, the weight of per unit length is greater than the size of drill pipe almost 4- 5 times .The majority of drill collar is thread processing directly on the pipe body , but some of them also use the replaced joint.