Process:centrifugal casting roller body and weld forged shaft Material: ZG40Cr25Ni20Si2,ZG3Cr24Ni7SiN,heat-resisting steel Annealing kiln Glass Roller:1. Material: ZG40Cr25Ni20Si2,ZG40Cr20Ni10 ... ,OD330,OD355,OD363 is general,or according to the drawingThe glass roll picture show the corner of our machine workshop