Your search National Labor Relations Board, Petitioner, v. Phoenix Pipe & Tube, L.p., D/b/a Phoenix Pipe Company, Apartnership Composed of 1st P.s.c. Corporation, Blue Pearlassociates, Inc., Red Linden Corporation, Blue Lindencorporation, and Phoenixville Steel Corporation, Respondent,united Steelworkers of America, Afl-cio-clc, Intervenor did not match any document.