48" DDS System

Double Drive Shoulder Connector

• Connector O.D. is flush with pipe O.D.
• Connector I.D. is flush with pipe I.D. on pipe wall thickness 1” or larger.
• Connector I.D. is near flush on pipe wall thickness less than 1” (unless threaded directly on pipe).
• Releasable, retrievable and re-usable after driving.
• Design allows drive forces to be carried on shoulder of connector rather than threads.
• Easy to stab because thread design does not allow cross threading.
• Interference thread holds together under vibration.
• Three seal points: metal to metal seal at each of two shoulders and one elastomer o-ring.
• Integral lift sub/protector on box end can be used with Horseshoe and Side Door Elevators. No padeyes and slings required.
• Less expensive than most comparable connectors.
• Running speed faster than comparable connector.
• Connectors are made of readily weldable materials.
• DDS connectors are currently available in sizes 16” through 48” with more sizes being added. Specialty sizes are available upon request.
• The connector can be cut on the pipe or on an 18” long segment of pipe and then welded to the pipe body.
• In order to achieve higher connector strength, Frank’s can provide X-70 grade pin and box material. This gives the customer the option of using API 5L-Grade B pipe coupled with high strength connectors.