We are a Drill collar Supplier » in Ajman, UAE. These Collars are made from forged solid steel bar or modified alloy steel. DIC Drill Collars are heat-treated to a hardness within 285 to 341. All connections are equipped with pressed steel thread protectors. They are available in various sizes, strengths, and wall thicknesses. We offer Slick Drill Collars, Spiral Drill Collars, and Short Drill Collars to suit multiple applications. These collars are manufactured according to API Spec 7-1 and NS-1 standards, using AISI 4145H, 4145H Modified materials, and non-magnetic steel.