Pig lead refers to a form of lead metal that is cast into large, oblong-shaped ingots known as "pigs." These pigs are typically standardized in weight and size for ease of handling and transportation. Lead is a dense and malleable metal with various industrial applications, including construction, batteries, radiation shielding, and ammunition manufacturing. Pig lead is produced through the smelting of lead ores, followed by refining processes to remove impurities and achieve the desired purity level. The molten lead is then poured into molds to solidify into the characteristic pig-shaped ingots.