molten metal flows into large round moulds as workers manage the pouring process in a bustling hot-rolling workshop filled with

manufacturing craftsmanship metallurgical construction engineering fabrication temperature environment hotrolling steelworks production industrial operations metalwork machinery resistant materials bustling workshop industry smelting workflow teamwork workers pouring process casting rolling foundry furnace quality control skilled molten moulds manage filled sparks worker safety metal flows large round steel ladle heavy alloy labor iron heat line work high mass hot