SUGAR LAND--May 1, 2012--Researched by Industrial Info Resources (Sugar Land, Texas)-- Northwest Pipe Company (NASDAQ:NWPX) (Vancouver, Washington), a leading manufacturer of welded steel pipes , made a surprising return to profitability in 2011, reporting record annual net sales. The company announced its results much later than usual, after Nasdaq threatened to delist the company if it did not make its annual report by the end of April. Net income was reported to be $12.66 million, compared with a net loss of $5.44 million in 2010.