▎ 摘　　要

NOVELTY - The utility model claims a prefabricated insulating stainless steel composite material steam insulating pipe, relating to the heat tracing pipeline field of device, for solving the problem that the device is used in the process of heating mechanism is only one set on the side of the thick cable, which is easy to cause uneven heating in the pipe, affecting the heat preservation effect. a separating reinforcing sheet, which is set around the outer wall of the stainless steel medium pipeline, and the separating reinforcing sheet is provided with four; graphene heat conducting layer, which is set between the adjacent separating reinforcing sheet, and the graphene heat conducting layer is provided with four; a heat tracing thin cable, which is installed at the middle position of the graphene heat conducting layer.