Premium thread for large O.D. casing.
• O.D. is 1% over API nominal for standard connections.
• Multiple metal-to-metal seals:
-14º internal self-bleeding/self-energizing primary seal
-14º self-bleeding external pressure seal with a 90º shoulder
-14º reserve-angle torque stop between outer seals
• Two-step, flush connection(per pending API specification 5A).
• 6 and 4 pitch-buttress threads.
The best large O.D. connection for maximum clearance in high pressure production casing.
• Plain end tubulars provide maximum clearance
• Connection tension efficiency, burst and collapse ratings are
not dependent on API tolerances.
• Customized thread design for each weight of pipe provides
maximum tensile efficiency.
• Assured burst and collapse integrity.
• Larger bearing surface for heavier weights of pipe.
• Easy stab-in design prevents cross threading.
• Excellent anti-galling characteristics under multiple make-ups.