The drilling rotary hose, made according to API Spec. 7K standard, applies for flexible hose connection between the top of oil drilling stand pipe and vertical moved swivel joint in well drilling, well cementing, work-over and down hole servicing operation, and also for adjusting the installation mistake between drilling pipe line and stand pipe to avoid shake. It also applies for high pressure oil or water base mud with the lowest aniline point of 60℃ from the swivel pipe in high pressure, and down-hole operation high medium such as water, oil and mud etc..

Temperature Range:

30°C~82°C, or manufactured upon customers' requirements

Hose Lining:

Principally NBR constructed, featuring oil-resistant, abrasion-resistant, acid & alkali resistant 

Hose Reinforcement: 

2~8 layers spiraled by single high-strength steel wire, and rubber as a binder to make the layers into one complete and sound construction

Hose Cover: 

Primarily CR fabricated, featuring oil-resistant, abrasion-resistant, weatherproof and anti-ageing

Coupling Type:

LP (Line Pipe Thread) and TBG (Tubing Thread) of API Spec 5B

Integral type union joint and flange joint

Particular types upon customers'specific requirements

Reference Standard:

API Spec 7K,ISO 6807