廢鐵
{Scrap forgings}, forgings made from wrought iron scrap. {Scrap iron}. (a) Cuttings and waste pieces of wrought iron from which bar iron or forgings can be made; -- called also {wrought-iron scrap}. (b) Fragments of cast iron or defective castings suitable for remelting in the foundry; -- called also {foundry scrap}, or {cast scrap}.
scrap iron n : iron to be melted again and reworked