tender for competitive job fabrication-throat at each station/units within the mill. cutting and removing old and weak pipes ranging from 1 inch to 12 inches diameter and providing new/replaced old pipes by making new flanges and giving them trial. at every station/unit inside the mill, removing the sore, old and weak nipples ranging from 1 inch to 12 inches diameter by cutting them and replacing them with nipples made from the provided pipes and giving them trial. cutting and removing the old and weak 1 inch to 12 inch diameter bands at each station/unit inside the mill and replacing them by making bands from the pipes provided and giving them trial. removing narrow and weak valves of 1 inch to 12 inches diameter at each station/unit inside the mill and replacing them with valves provided and giving them trial. at every station/unit inside the mill, cutting and removing the old and weak tees of 1 inch to 12 inches diameter and making available tees in their place with pipes.