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Northwest Pipe Co. Receives US Patent for Innovative InfraShield Joint System

Enhances steel pressure-pipe resilience in differential settlement and seismic applications

Quality Digest
Tue, 02/25/2025 - 12:01
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(Northwest Pipe Co.: Portland, OR) -- Northwest Pipe Co., a leading manufacturer of water-related infrastructure, announced that the U.S. Patent and Trademark Office has issued U.S. Patent No. 12215817 for the InfraShield Joint System (“InfraShield”), an innovative geohazard-resistant steel pipe (GRSP) solution designed to strengthen the resilience of steel pipelines in geologically vulnerable areas without the need for gasketed joints.

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Manufactured in the U.S. and backed by rigorous testing, InfraShield enhances pipeline performance of C200 steel pipe by offering a fully welded, easy-to-install system that ensures leak-free reliability while delivering significant cost savings. The system utilizes a strain-based design to enhance the resiliency of lap-welded steel pipe. A small projection is manufactured into the steel pipe wall which effectively absorbs deformation imposed by differential settlement or seismic activity without overstressing the lap-welded joint itself.

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