To provide a long-life, inexpensive insulated roll which is free from the crack of insulating rings themselves and the exfoliation or damage to an insulating coating due to a shock or thermal effect at the time of transferring a hot-rolled steel strip at the high temperature of approximately 1,200°C.

The insulated roll for conveying a steel strip has a plurality of insulating rings around a mandrel cooled with cooling water supplied from the outside. The roll for conveying the steel strip is excellent in insulation performance by conducting thermal spraying for sealing voids on the inner circumference and side face of the insulating rings.