Flange manufacturer, slip on flange, hub flange, welding neck flange, blind flange, socket welding flange and more
The pressure on the flange joint tends to increase as the pressure containment capacity and/or the diameter of the pipe increases.
A slip-on hub flange has an additional structure called “hub” in order to bear higher pressure.
The slip-on hub flange is often used for higher pressure and/or larger diameter pipes than the slip-on flange without the hub.