Abstract: In a technique for joining ends of coaxial tubular members, adhesive is applied to their external surfaces at their ends and an expandable insert assembly is positioned longitudinally within them so as to be coextensive with the adjoining ends. Planar side pieces on the assembly are advanced into conforming engagement with the inside surfaces of the tubular members at their adjoining ends, the adhesive is cured to fixedly join the tubular members together, then the side pieces are withdrawn. Simultaneously, the external surfaces of the tubular members are clamped in the region of their adjoining ends until full curing of the adhesive has been achieved. The insert assembly includes a bladder of flexible material with planar side pieces being attached to the inside or outside surfaces and the insert assembly advanced so the bladder engages the internal surfaces of the tubular members at their adjoining ends.

Abstract: A tool and related method uses an insert for lap splicing two end to end connected tubes to one another. The insert is formed from plurality of members which together are receivable into the internal size and shape of the internal tubular member. The insert can be pulled out of the tubular members once the lap joint is formed. The invention also resides in a tool which locates a flange onto the outside surface at the end of the tubular member to effect registration of it in a flush and perpendicular manner.