· Heavy Weight DP New Inertia Welded Heavy Weight will be available in January 2007 Heavy Weight Specifications
Manufacture: ThyssenKrupp heavy weight drill pipe are made from one integral forging on a radial hammer forging machine for uniform strength and reliability. No welds with questionable quality are of concern to the user Hardbanding: To optimise wear resistance, hardbanding is standard on tool joints and central upsets. Hardbanding is deposited after preheating and is followed by stress relieving. Standard pads: · One 4" wear pad on both pin and box end, plus one 1" pad on taper section of box. · Two 3" wear pads on central upsets. The hardbanding is raised on both tool joints and 1/8" oversize on the central upset (flush on request). · All standard types of hardbanding can be provided as well as proprietary types. Stress Relief Groove and Connection Features: · API stress relief grooves on box ends and API stress relief grooves on pin end are standard. · Thread roots are cold worked on all sizes. · All connections are phosphated, coated with lubricant and provided with pressed steel protectors.