Specification :

1. Usage: suitable for flexible connection between the top of the drilling riser and the vertically movable water faucet in oil drilling and mud delivery system, and for the adjustment of installing tolerable error between the drilling pump linepipe and the riser, therefore aims to the connection and vibration isolation In the condition of high pressure, It is also suitable for delivering water-based or oil-based mud in large quantity and with the minimum aniline point at 660C pumped out of rotary drilling equipment. Moreover, it resists to corrosion of hydrogen sulfide and delivers water, oil, mud and other high-pressure media in drilling operation in oil field.
2. Construction: It made of inner sub or stainless steel armor inner tube, carbon fiber reinforce sub, middle sub, steel wire reinforce sub (Steel cauterization line reinforce sub), and carbon fiber outer sub.
3. Type: steel wire reinforcing type and steel link Line reinforcing type.
4. Standard: API Spec 7K & SY/T5469-92.