NWPX Infrastructure completes first curved steel microtunnel installation

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NWPX Infrastructure Successfully Completes First Installation of Revolutionary Radial Bending Joint Technology

June 10, 2026 4:12 PM EDT

Patent-pending innovation establishes the world's first intentionally curved steel microtunnel installation and expands possibilities in trenchless infrastructure construction

VANCOUVER, Wash., June 10, 2026 /PRNewswire/ -- NWPX Infrastructure, Inc. (Nasdaq: NWPX), a leading manufacturer of water-related infrastructure products, today announced the successful completion of the first field installation of its patent-pending Permalok® Radial Bending Joint, a breakthrough technology that enables steel casing pipe to be installed along intentionally curved alignments during microtunneling operations.

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