Method of hot tapping type branching and split joint used therei

Details Method of hot tapping type branching and split joint used therei Method of hot tapping type branching and split joint used therei

1983-02-28

1988-01-19

Walton, G. L.

Fluid handling

Processes

Cleaning, repairing, or assembling

137318, 138 92, 285197, 408 87, F16K 4300

Patent

active

047199369

ABSTRACT:
The disclosed invention provides a novel method of perforating a main pipeline while in service, and split joints suited to this method, in order to connect a branch pipeline thereto. According to this method, perforating work is carried out from an opposite side across the main pipeline to where the branch pipeline is connected, as distinct from known methods in which perforating work is carried out on the side of the main pipeline to which a branch pipeline is connected.

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patent: 4408636 (1983-10-01), Karpenko

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