Cov kab me me, xws li 75mm txog 225mm, peb cov graphite electrode tshwj xeeb tsim los ua kom tau raws li qhov xav tau ntawm kev lag luam xws li calcium carbide smelting, carborundum ntau lawm, dawb corundum refining, tsawg hlau smelting, thiab Ferrosilicon cog refractory xav tau.