Introduction of swivel flange
Swivel flange is also called swivel ring flange.Which is consist of a forged outer ring flange,a heavy forged welding hub and a retainer ring.the hub can be rotated when the flange is installed.The outer ring flange is held in position by a retainer ring and can freely rotates around the inner weld-neck hub for quickly positioning the bolt holes of the two joining flanges.This versatile flanges are utilized in many applications and are used extensively in offshore piping where they solve the issues associated with the alignment of bolt holes during subsea flange installation.
We can easily understand the structure of swivel flange from the following drawing.It’s consist of a forged outer ring flange,a heavy forged welding hub and a retainer ring.
The swivel ring flange is comparable to a set of stub end and lap joint flange,with the difference that an swivel ring flange is used for higher pressure and mostly in offshore/subsea applications.
There are no industry guidelines specifically suited for Swivel Ring Flanges design and manufacture.Hebei Haihao Group design and manufacture swivel flange for any size and pressure rating to meet applicable dimensions and gasket types of any recognized flange specification, such as ASME B16.5, ASME B16.47,API 6A or MSS SP-44 and API 17D.The material is available in A694 F52/F60/F65/F70, ASTM A105N, A350 LF2 CL1,A182 F51(S31803),F53(S32750) and F53 (S32760),ASTM A182-F304/F304L, F321/F321H, F316/F316L, F316Ti, F347/F347H etc., etc
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