Cut sections of a solvent-welded PVC socket, an HDPE butt-fusion joint, a PP socket-fusion joint and a threaded plastic elbow laid out on a bench for failure analysis

Why Plastic Pipe Joints Fail: Six Failure Modes Read Back From the Fracture Surface

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Plastic pipe joints fail in a small number of readable ways, and the joint surface is where the reading starts. This guide covers six failure modes across the four jointing methods a mixed-material project actually uses: solvent weld, socket and butt fusion, electrofusion, and mechanical or threaded transitions. Each mode leaves a different surface, arrives […]

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