Heavy Weight Drill Pipe

OCTL Heavy Weight Drill Pipe consists of two extra long tool joints and one central heavy wall tube. The tool joints are friction welded to the central heavy wall tube. The tool joints are manufactured from AISI 4145 H modified material, fully heat treated to 285 _ 341 Brinell hardness and 40 ft-lbs. minimum Charpy V-notch Impact strength. All other physical properties conform to API 7-1. The central heavy wall tube is manufactured from AISI 1340 steel or equivalent.

Features:

• OCTL Heavy Weight Drill Pipe is manufactured in compliance with API 7-1 and in API RP7G.
• Bore Back on Box ends and API Stress Relief Groove on Pin ends are standard for all sizes.
• Thread roots are cold worked on all sizes for durability.
• All connections are phosphatized to help prevent galling during make-up, coated with lubricant and provided with pressed steel thread protectors or cast steel thread protectors with lifting bails.
• To optimize wear resistance, hardbanding is standard on tool joint connections and central upset.
• Standard hardbanding includes one 4" wear pad on both pin and box end, plus one 1" pad on taper section of box to prevent fluid cutting and two 3" wear pads on central upset to prevent wear on the pipe section. The hardbanding is completely flush on both tool joints and 1/8" oversize on the central upset (fully flush on request). Hardbanding materials include crushed sintered tungsten carbide of 14-24 mesh, Arnco 100 XT™ or Arnco 200XT™, Armacor-M™, TCS 8000™ or TCS Titanium™
• Internal Plastic Coating, if required (optional).

Quality Control: A rigorous quality assurance program is maintained at every manufacturing step. Each Heavy Weight Drill Pipe joint is fully inspected by an ultrasonic unit full length. The Mechanical Properties, dimensions, and thread inspections are recorded on the Inspection Certificate. Every connection is 100% dimensionally inspected and recorded.

Spiral Heavy Weight Drill Pipe: Spiral Heavy Weight Drill Pipe consists of three spiral upsets equally spaced between the tool joints.

Spiral Heavy Weight Drill Pipe features more weight per foot and better hole cleaning characteristics than standard Heavy Weight Drill Pipe, providing optimum performance in severe drilling conditions.