DOWNHOLE OIL TOOLS, INC
Cypress TX USA
Drill PipeTubes - Tubes are inspected for any defects to ensure quality. All tool joints are manufactured using state of the art CNC machines & thoroughly inspects all bars & forgings of tool joints. Tool joints are produced using 4137M material & heat treated to industry standards before threading. Threading done IAW industry standards spec 7. Hard banding available upon customer request.Upsetting - We offer an external upset (EU), internal upset (IU), & an internal-external upset (IEU). Our group 1 & 3 upsets utilize a geometry which minimizes stress concentration.Heat Treating - Industry standard 5D grades & also offers pipe suitable for sour services.Inertia Welding - Tool joints & drill pipe are bonded utilizing inertia welding within standard Spec 7 SR1Non Destructive Testing - Ultrasonic Inspection on Tubes. Wet Magnetic Particle Inspection on Upset EndsFinishing - Zinc based thead compound and thread protectors appiled.