... 2,etc.EndPlain end, beveled, cut square, grooved, threaded and coupling, etc.SurfaceBare, varnished, black lacquer, Bitumen Coating, zinc ... industries-for use as casing and tubing for wells, screwed and socketed steel tubes and tubularand for plain end steel ... for welded, riveted,or bolted construction of bridges and buildings, and for generalstructural purposes- suitable for nominal pressure 25 ...