0 votes 0 votes In a casting process, a vertical channel through which molten metal flows downward from pouring basin to runner for reaching the mold cavity is called blister sprue riser pin hole Materials, Manufacturing and Industrial Engineering gateme-2019-set1 materials-manufacturing-and-industrial-engineering casting-forming-and-joining-process + – Arjun asked Feb 9, 2019 • recategorized Mar 5, 2021 by Lakshman Bhaiya ♦Arjun 28.5k points answer See all 0 reply