Swivel［explain in detail］
Swivel has two categories, common swivel and double duty swivel. Double duty swivel is common swivel combined with spinner.The company's swivel matches the API SPEC 8C PSL1 products standards. It received the API certification issued by the American petroleum Institute and allow to use API monogram.
Washpipe packing set assembly adopts cassette structure .It can be exchanged quickly without disassemble rotary hose and gooseneck.
May matching 3LP and 4LP internal or external thread hose connection thread.
The factory can also manufacture low temperature resistant swivel according to customer’s requirement.
Common swivel consists of swivel bail , shell ,support, gooseneck ,central pipe ,master bearing ,joint other parts. The lower end connected with kelly stem by REG thread .The swivel bail is hang on the hook. Gooseneck and rotary hose can connected by REG thread connection or union connection (Under normal circumstances, the CH125 swivel not welded thread joint, other types of swivel welded 4LP external thread).
Basic Technical Parameters of Normal swivels
|Angle between the gooseneck central line and vertical line||15°|
|Lower thread||4 1/2 REG-LH||4 1/2 REG-LH||6 5/8REG-LH|
|Bore Size of Central Pipe||φ60||φ63.5||φ68||φ60 mm||φ70||φ75|
|Fractured surface at bail bend||R50||
|Bail bend radius||R105||R115||R120|