Kedelv started working as a student in the drawing studio at Orrefors glassworks in 1931 with supervisors such as Simon Gate and Edward Hald. From 1949 to 1956, Kedelv was active at Flygsfor's glass factory, where he, among other things, designed coquille glass and products in undercut glass. Between 1956 and 1977 he worked at the Reijmyre glass factory. Kedelv has also designed products for the Nybrofabriken in Fröseke and Fåglavik glassworks.