Are Looking For hydraulic plug mandrel in UAE, Malaysia, Australia, USA, & Russia? Hydraulic Plug Mandrel is effective in holding pipe, easily convert pipe size. It's simple, robust design reduces maintenance requirements. Call us now! Depending on its size, the hydraulic mandrel is moved manually within the pipe using a reach rod. To operate the mandrel, the pull-type version requires two hydraulic hoses, whereas the self-propelled version requires four hydraulic hoses. The hydraulic mandrel is supplied directly over the bending machine’s hydraulic system.