Northwest Pipe Gets Stake In Permalok

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Northwest Pipe Co. has acquired Permalok Corp., a fabricator of steel piping utilizing the Permalok patented interlocking pipe joining system. The acquisition strengthens Northwest Pipe Co.’s Water Transmission business with Permalok’s rolled and welded steel pipe products currently being used in trenchless applications. The Permalok team will continue to operate out of its St. Louis and Salt Lake City manufacturing locations and will be doing business as Permalok Corp., a Northwest Pipe Co.