... Detailed conveyor roller idler feature: 1.Roller idlers Dia 50mm-219mm, length 190-3500mm, which are used in the steel industry, ... , cement industry, etc2.Tube: carbon steel tube S235JR/ seamless steel tube3.Shaft: 45# STEEL equal to C45, or as request.4 ... painting, baked painting. Guide idler,Conveyor trough idler,steel roller,return roller,conveyor idler roller,conveyor impact roller,conveyor return ...