APPLICATION:
Kelly hose is a high-pressure drilling hose used to connect the standpipe to the swivel, allowing drilling fluid to flow continuously while the drill string is raised and lowered during operation. Designed for demanding oilfield drilling environments, the hose is typically reinforced with two layers of plated steel cable to support working pressures up to 5,000 psi. Its durable rubber cover provides long-term resistance to ozone, sunlight, oil, abrasion, and harsh outdoor conditions.
TEMPERATURE: -20℃ ~ +121℃ (-4℉~+250℉), range Ⅰ/Ⅱ/Ⅲ, FSL 1/2
CONSTRUCTION:
Tube: UHMW and synthetic rubber, full flow
Reinforcement: Multi-layer of high tensile super flexible spiral steel wire
Middle: Synthetic rubber
Cover: Abrasion, oil and weather resistant synthetic rubber
STANDARDS: API Spec. 7K, ABS
| Hose Part No. | Pressure Level | I.D. | O.D. | W.P. | P.P. | B.P. | MBR(storage) | MBR(operation) | Weight | Length Max | |
| psi | inch | mm | mm | psi | psi | psi | mm | mm | kg/m | m | |
| A804D-32-5K | 5000 Grade D | 2 | 51 | 91 | 5000 | 10000 | 12500 | 800 | 900 | 11.24 | 61 |
| A804D-40-5K | 2.5 | 64 | 103 | 800 | 900 | 13 | 61 | ||||
| A804D-48-5K | 3 | 76 | 120 | 1100 | 1200 | 18 | 61 | ||||
| A804D-56-5K | 3.5 | 89 | 134 | 1200 | 1300 | 21 | 61 | ||||
| A804D-64-5K | 4 | 102 | 160 | 1200 | 1400 | 35 | 61 | ||||
| A804D-80-5K | 5 | 127 | 191 | 1400 | 1500 | 51 | 61 | ||||
| A804D-96-5K | 6 | 152 | 224 | 1600 | 1800 | 57 | 61 | ||||
| A804D-32-7.5K | 7500 Grade E | 2 | 51 | 103 | 7500 | 15000 | 18750 | 1100 | 1200 | 19 | 61 |
| A804D-40-7.5K | 2.5 | 64 | 124 | 1100 | 1200 | 28 | 61 | ||||
| A804D-48-7.5K | 3 | 76 | 138 | 1200 | 1300 | 31 | 61 | ||||
| A804D-56-7.5K | 3.5 | 89 | 151 | 1300 | 1400 | 38 | 61 | ||||
| A804D-64-7.5K | 4 | 102 | 168 | 1400 | 1500 | 44 | 61 | ||||
| A804D-80-7.5K | 5 | 127 | 204 | 1500 | 1600 | 64 | 61 | ||||
| A804D-96-7.5K | 6 | 152 | 248 | 1600 | 1800 | 92 | 61 | ||||
A kelly hose (also known as a rotary hose or mud hose) is a specialized, flexible, high-pressure rubber hose on oilfield drilling rigs. It connects the fixed standpipe to the moving swivel, allowing drilling fluids to be pumped while the drill string moves vertically, often handling pressures up to 5,000 psi or higher.
Kelly hose is often also called rotary hose, rotary drilling hose, or mud hose. In many drilling applications, these names refer to similar high-pressure flexible hoses used for drilling fluid transfer.
Alienfrac can supply Kelly hose with different pressure ratings, such as 3,000 psi, 5,000 psi, 7,500 psi, 10,000 psi, 15,000 psi, or customized pressure ratings according to your project requirement.
Yes. Hose length can be customized according to your rig layout, installation space, and working condition.
Available end fittings include hammer union, flange, threaded connection, integral fitting, API connection, NPT, LP, BSP, or customized connection types.
Lead time depends on hose size, pressure rating, quantity, fitting type, certificate requirement, and production schedule. Please contact us with your detailed specifications for an accurate delivery time.
Kelly hose should be inspected regularly for cover damage, fitting looseness, leakage, abnormal bending, abrasion, corrosion, and aging. Avoid sharp bending, crushing, dragging, and exposure to unsuitable chemicals.
Yes, API 7K Kelly hose can be supplied if your order requires it. Please confirm your required standard, certificate, inspection document, and technical specification before placing the order.
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