Flange type drilling riser connectors should be designed and manufactured to API 16Q and API Spec 16F and should have corrosion resistant metal cladding overlay bore seal area profiles and metal-to-metal, re-useable seals with appropriate joint bending moment applied including any other external loads.
The connector should be high strength, low stress, easy make and break, and low weight characteristics. The box-up riser connector should have a profile to accept a quick makeup and breakout running tool. Depending on the specific connector design, it should include high strength locking bolts or dogs with corresponding threaded inserts or any other equivalent means of locking the riser box to the pin. Connector design should include sufficient connector preload to minimize fatigue.