Product Description

*1 Design & working procedure Conform to the requirment of API Spec 7 *1 *2 Non-API standard type of drill collars are also avalible as per client'request *3 Cold-rolled thread roots *4 Thread connections are performed with stress relief grooves *5 phosphated threads applied *6 option: Drill Collar with slip and elevator recesses, with hard banding, with spiral grooves, with elevator recess, with elevator recess with hard banding are all available