Process:centrifugal casting roller body and weld forged shaft Material: ZG40Cr25Ni20Si2,ZG3Cr24Ni7SiN,heat-resisting steel Annealing kiln Glass Roller:Process:centrifugal casting roller body and weld forged shaftMaterial: ZG40Cr25Ni20Si2,ZG40Cr20Ni10,ZG3Cr24Ni7SiN,heat-resisting steel,or according to customers requestSpecification:OD160,OD305,OD330,OD355,OD363, or according to customers request