The outer ring of the rotating flange allows 360 ° rotation around the inner ring, so that the bolt hole can be quickly aligned with the matched standard flange. This feature is very important for submarine pipeline operation, which can make the diver align the bolt hole more quickly and conveniently.
The rotating flange can be designed for any size and pressure class to meet any recognized flange specification and gasket, such as ASME B16.5 or MSS sp-44. Non standard rotating ring flange can also be designed according to customer requirements to be suitable for some special applications, such as over welding of inner ring or PTFE spraying treatment of flange surface
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