Pipe crimping machine

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Crimping machines use mechanical radial compression (avoiding heat/welding to protect the thermoplastic liner and fiber reinforcement). First, insert the RTP end into a matching metal crimp fitting, then align the machine’s segmented dies with the fitting’s outer surface to ensure concentricity. The hydraulic driven dies then close radially, applying uniform pressure to the metal fitting. As the metal fitting deforms inward, it clamps the RTP’s outer jacket tightly, transferring force to the fiber reinforcement and inner liner—making the liner fit the fitting’s inner structure. The fitting’s grooves embed into the pipe layers to form a mechanical interlock. Once reaching preset pressure, the dies retract, leaving the deformed fitting permanently locked to the RTP, creating a leak-tight seal against internal pressure and an anti-pull structure to prevent axial disengagement.