BIRMINGHAM, Ala. (Oct. 29, 2013) – AMERICAN Steel Pipe, a division of AMERICAN Cast Iron Pipe Company announced that it will expand its steel pipe operations, adding a processing facility to its North Mill. The facility will cost more than $55 million to construct. AMERICAN manufactures electric-resistance-welded (ERW) steel pipe in diameters from 10.75 to 20 inches in its South Mill, and 16 to 24 inches in its North Mill.