Importance

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Abstract

An apparatus and a method for welding joint fixtures to either end of a pipe at a given angles of attachment. A retaining mechanism on both the driver side and the follower side for joint fixtures is provided on either end of a horizontally elongated table on which a pipe is to be horizontally placed. The joint fixtures are secured on the opposing inner ends of the retaining mechanisms via clamping devices to receive the pipe therebetween. The retaining mechanism for the joint fixture on the driver side includes a device for establishing the angle of attachment of the joint fixture so that the joint fixture can be turned to a predetermined angular position. After the angle of attachment of the joint fixture to the pipe is determined, the junctions between the joint fixtures and the pipe on either end are held in place by gripping devices for tentative welding using welding torches. When the tentative welding is completed, the gripping devices are released and the entire circumference of respective junctions is welded by the welding torches.

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First Claim