Piling
Puddled balls, after being shingled, are called blooms, which after passing through the puddle-bar rolls are called puddle-bar. For the best iron these bars are cut into short lengths and made into piles, to be reheated and again passed through the forge-rolls, after which the iron is again cut, piled, and heated, and then passed through the mill-train, the finishing-rolls being the last rolls in the train. For beams, rails, etc., the piling is arranged to suit the form required, the pile consisting of different grades of iron, according to the desired quality of the finished product. See MALLEABLE IRON.