At Hongruntong Marine, we've spent over 30 years perfecting the art of rotary drilling hose manufacturing. Our hoses are engineered to handle the intense demands of the oilfield, offering unmatched durability, safety, and efficiency. Trusted by global oil and gas operators, our products are built to perform under the harshest conditions, ensuring smooth and reliable operations.
| Component | Specification |
|---|---|
| Tube | Modified nitrile, black, specifically engineered for the effective handling of abrasive, corrosive substances, and oil drilling mud. |
| Reinforcement | Composite construction featuring multiple layers of textile fabric and steel cable, with a layer of rubber positioned between the cable layers for enhanced performance. |
| Cover | Black modified nitrile with a specially engineered ultra-abrasion cover, designed to provide exceptional resistance to abrasion, corrosion, cutting, gouging, oil, and weather conditions. |
| Coupling | Swaged couplings, full range of couplings available including hammer union, flanges, hubs, male thread, etc. |
| Certification | API 7K-0376 / ISO14693 |
| Temperature | -40°C to +82°C (-104°F to +180°F) |
| Options | Accessories such as safety clamps and hose lift eyes are available upon request |
| Test | Each hose is tested at 22,500 psi for 15 minutes. Pressure test graph, test certificate and letter of conformance are issued for each hose. |




Our rotary drilling hoses are constructed with cutting-edge materials to meet the rigorous requirements of modern drilling environments:
Every Hongruntong Marine rotary drilling hose undergoes a rigorous manufacturing process and quality control checks to ensure compliance with international certifications, including API Spec 7K and ISO 9001. We guarantee:
Our rotary drilling hoses are indispensable in various operations:
| Model | I.D. (inch/mm) | O.D. (mm) | W.P. mpa(psi) | T.P. mpa(psi) | Weight (kg/m) | B.R. (mm) |
|---|---|---|---|---|---|---|
| HMRDH-Grade A | 1 1/2 | 38 | 51 | 11(1500) | 22(3000) | 2.19 | 560 |
| 2 | 51 | 65 | 11(1500) | 22(3000) | 3.03 | 900 | |
| 2 1/2 | 64 | 78 | 11(1500) | 22(3000) | 3.95 | 1200 | |
| HMRDH-Grade B | 1 1/2 | 38 | 52 | 14(2000) | 28(4000) | 2.39 | 560 |
| 2 | 51 | 66 | 14(2000) | 28(4000) | 3.25 | 900 | |
| 2 1/2 | 64 | 79 | 14(2000) | 28(4000) | 4.37 | 1200 | |
| 3 | 76 | 98 | 14(2000) | 28(4000) | 7.76 | 1200 | |
| 3 1/2 | 89 | 113 | 14(2000) | 28(4000) | 9.95 | 1300 | |
| 4 | 102 | 127 | 14(2000) | 28(4000) | 12.43 | 1400 | |
| 5 | 127 | 153 | 14(2000) | 28(4000) | 15.25 | 1500 | |
| 6 | 152 | 178 | 14(2000) | 28(4000) | 18.71 | 1600 | |
| HMRDH-Grade C | 1 1/2 | 38 | 55 | 28(4000) | 56(8000) | 3.65 | 560 |
| 2 | 51 | 69 | 28(4000) | 56(8000) | 5.15 | 900 | |
| 2 1/2 | 64 | 88 | 28(4000) | 56(8000) | 7.86 | 1200 | |
| 3 | 76 | 105 | 28(4000) | 56(8000) | 13.12 | 1200 | |
| 3 1/2 | 89 | 121 | 28(4000) | 56(8000) | 16.79 | 1300 | |
| 4 | 102 | 137 | 28(4000) | 56(8000) | 21.70 | 1400 | |
| 5 | 127 | 164 | 28(4000) | 56(8000) | 28.46 | 1500 | |
| 6 | 152 | 197 | 28(4000) | 56(8000) | 44.64 | 1600 | |
| HMRDH-Grade D | 2 | 51 | 73 | 35(5000) | 70(10000) | 6.46 | 900 |
| 2 1/2 | 64 | 91 | 35(5000) | 70(10000) | 10.75 | 1200 | |
| 3 | 76 | 107 | 35(5000) | 70(10000) | 14.35 | 1200 | |
| 3 1/2 | 89 | 123 | 35(5000) | 70(10000) | 18.77 | 1300 | |
| 4 | 102 | 139 | 35(5000) | 70(10000) | 23.16 | 1400 | |
| 5 | 127 | 171 | 35(5000) | 70(10000) | 38.00 | 1500 | |
| 6 | 152 | 200 | 35(5000) | 70(10000) | 48.43 | 1600 | |
| HMRDH-Grade E | 2 | 51 | 80 | 52(7500) | 104(15000) | 10.37 | 1000 |
| 2 1/2 | 64 | 101 | 52(7500) | 104(15000) | 17.88 | 1200 | |
| 3 | 76 | 120 | 52(7500) | 104(15000) | 24.45 | 1200 | |
| 3 1/2 | 89 | 135 | 52(7500) | 104(15000) | 29.33 | 1300 | |
| 4 | 102 | 148 | 52(7500) | 104(15000) | 34.24 | 1400 | |
| 5 | 127 | 189 | 52(7500) | 104(15000) | 55.39 | 1500 | |
| HMRDH-Grade F | 2 | 51 | 82 | 70(10000) | 105(15000) | 11.81 | 1000 |
| 2 1/2 | 64 | 104 | 70(10000) | 105(15000) | 20.46 | 1300 | |
| 3 | 76 | 129 | 70(10000) | 105(15000) | 32.74 | 1300 | |
| 3 1/2 | 89 | 144 | 70(10000) | 105(15000) | 39.43 | 1400 | |
| 4 | 102 | 158 | 70(10000) | 105(15000) | 45.73 | 1500 | |
| HMRDH-Grade G | 2 | 51 | 92 | 105(15000) | 157(22500) | 17.37 | 1000 |

