Description Slip on Flange or Slip on Flange has a short edge on its surface. Rocar steel flange is used in conventional services. It is easy to install and has a resistance of two-thirds of the internal pressure and one-third of the endurance load of the neck flange and the cost of installing the Slippon flange is higher than other flanges. Class 150 and class 300 and Ghizeh. Its connection to the pipe is done by welding and connecting two flanges to each other by bolts and nuts. For more information, call 09339765265 Call 09123261608.