Metallurgy MachineryChina Hearth and Furnace Roller for Cgl/Cal, Made From Cr20ni32nb, Cr25ni20/HK, Cr20ni25/Hn, Cr18ni9, with Centrifugal Casting, Chill Mould Casting and Machining, Find details about China Hearth Roll, Roll from Hearth and Furnace Roller for Cgl/Cal, Made From Cr20ni32nb, Cr25ni20/HK, Cr20ni25/Hn, Cr18ni9, with Centrifugal Casting, Chill Mould Casting and Machining