NWPX Infrastructure Inc. (NASDAQ: NWPX) announced the completion of its first field installation using patent-pending Radial Bending Joint technology, which enables steel casing pipe to follow curved alignments during microtunneling operations.

The installation was completed beneath New Jersey's Pleasure Bay as part of an emergency wastewater infrastructure project for the Two Rivers Water Reclamation Authority. The project consisted of approximately 1,290 linear feet of 72-inch steel casing pipe installed along a 5,500-foot-radius curved alignment.

Traditional steel casing pipe used in microtunneling has been limited to straight-line installations, requiring engineers to design projects around existing underground obstacles and infrastructure. The Permalok Radial Bending Joint technology allows steel casing pipe to follow controlled horizontal, vertical, diagonal, and compound curves while maintaining structural integrity.

"This is one of the most significant advancements in steel microtunneling in decades," said Scott Montross, President and Chief Executive Officer of NWPX Infrastructure. "The successful installation of the Radial Bending Joint demonstrates that curved steel microtunneling is no longer a concept, but a proven reality."

The technology retains the advantages of Permalok's press-fit connection system, including weld-free installation, reduced field labor requirements, and compatibility with existing microtunneling boring machines and jacking systems. The project was designed by Hazen and Sawyer and installed by Northeast Remsco Construction.

NWPX Infrastructure, founded in 1966 and headquartered in Vancouver, Washington, manufactures water-related infrastructure products and operates 14 manufacturing facilities across North America.