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(1) Applicability:
Commonly used in drilling, cementing, work over service as flexible connection for mud manifold, cement manifold, choke and kill manifold to transport water base mud or oil base mud, washing fluid at high pressure in large volumes.
(2) Temperature Range:
-20°C~121°C
(3) Structure:
* Tube (lining): Principally compounded rubber, featuring oil-resistant, abrasion-resistant, acid& alkali resistant.
* Reinforcement: 2-6 layers of high strength steel wire spiral.
* Cover: featuring oil-resistant, Low temperature, weather proof and anti-ageing.
(4) Coupling type:
* LP and TBG of API Spec 5B
* Flange or clip specified in API Spec 6A
* Integral union or weld hammer union or upon customers specific requirement
(5) Specification:
Grade A , Grade B, Grade C, Grade D, Grade E
Grade A
I.D in. mm | O.D mm | W.P MPa (psi) | Burst Pressure MPa (psi) | Weight kg/m | Min Bending Radius mm | Coupling Thread in | T.P MPa(psi) |
| 2 51 | 73.3 | 10.3(1500) | 25.8 (3750) | 4.1 | 900 | 21/2 LP | 20.7(3000) |
| 21/2 64 | 87.2 | 10.3(3000) | 25.8 (3750) | 5.2 | 1200 | 3LP | 20.7(3000) |
We feel proud in introducing ourselves as one of Chinese leading Manufacturers and Suppliers of the special rubber hose. We are the main supplier for CNPC, SINOPEC and CNOOC, and the products have been expored to Europe, North America, Middle East and Southeast Asia and so on.
The LONGKAI(LK) rotary drilling hose is well known in china domestic market.
Product | Rotary drilling hose Hydraulic hose BOP control hose Choke and kill hose Metal-welding and cutting rubber hose Diluted acid and alkali resistant rubber hose Hammer union |
Certification | API Q1 Registration ISO 9001:2008 ISO/TS 29001 API Spec 7K API Spec 16C |
Persuing the perfect, seeking the greater perfect is the company's attitude.
Honest and matter-of-fact practice and the customer first conception is this company's promise.
Shandong Longkou Special Rubber Hose Co., Ltd.
Founded in 1993.
API 7K High Pressure Rotary Drilling Rubber Hoses