Composite threaded pipe connectors and method

Details Composite threaded pipe connectors and method Composite threaded pipe connectors and method

1992-03-13

1995-03-21

Nicholson, Eric K.

Pipe joints or couplings

With indicator, alarm or inspection means

285390, 285333, F16L 1500

Patent

active

053989759

ABSTRACT:
A composite tubular such as a pipe joint and method of forming the composite tubular is provided in which one of the threaded connectors of the tubular has a composite layer of carbon fiber reinforced plastic formed thereon. The body of the tubular or pipe joint is preferably formed of a composite material such as fiberglass reinforced plastic. The connectors of tubulars may be threaded together with a suitable thread sealant to provide a pressure tight seal in the connection. The pressure tight seal may be formed over a wide range of torque values, therefore, the tubular may be made-up to position rather than torque to form a pressure-tight seal and without galling the threads of the connectors. The layer of carbon and resin also reduces or eliminates galling of the threads and reduces thread wear, therefore, many make-and-break cycles are possible without excessive thread wear.

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