For many lifting operations on pipeline projects, belts, slings, ropes/cables or chains are not the right lifting gear. For some special tasks, there are suitable special tools that are tailor-made for that purpose. Roller cradles or lowering-in cradles are a special pipe lifting equipment for pipeline construction. These are used to lower the finished pipeline into the pipe trench using side boom crawlers. To do this, the crawlers drive as a group in a steady forwards movement. The rollers on the roller cradles are specially shaped and coated with special plastic to prevent any damage to the pipe insulation. The respective roller cradles can be used with several pipe sizes.