Drill Collar
Drill collars are manufactured strictly according to API Spec7-1 standard with material of AISI 4145 Mod. Kingwell supplies slick drill collars, spiral drill collars and non-magnetic drill collars etc. The size of drill collar Kingwell is from 3-1/8 to 11 inches. Besides models listed in the table below, other drill collars at customers' specific request can be available.
Drill collars are manufactured strictly according to API Spec7-1 standard with material of AISI 4145 Mod. Kingwell supplies slick drill collars, spiral drill collars and non-magnetic drill collars etc. The size of drill collar Kingwell is from 3-1/8 to 11 inches. Besides models listed in the table below, other drill collars at customers' specific request can be available.