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Mechanical connections increase joining efficiency. Anon. Pipeline Gas J., December 1995, 222(12), 39--40.

The need for cost-effective joining of plastic pipe for natural gas distribution companies is discussed. Methods based on fusion techniques are compared with a new mechanical connection technique developed by Perfection Corp. in Ohio. Cost-time comparisons are made for the installation of 75 ft of 0.5 in. diameter PE tubing. Tabulated data show significant savings in labour costs using the mechanical coupling method. Installation tests show that a typical PE gas service line can be joined with mechanical couplings in less than one quarter of the time required using heat fusion methods. 20% cost savings are reported and mechanical couplings are recommended to help gas utilities meet operational targets.

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