The main application of high-pressure rubber hose in coal mining industry is to drill and transport water and other fluids underground. It is also used in various oilfield applications.
Depending on the type of material being conveyed, there are several hose types available for these applications. Some hoses have elastic linings that allow them to withstand wear and other mechanical damage. Others have a layer of polymer, which can protect the lining from abrasion and can withstand higher pressure than the elastic lining.
For example, Litong has hoses specially designed for the coal industry. It has been approved by MSHA and meets the requirements of ISO 18752. It can be used in single or multi-point systems, and can be used in a variety of applications, including mud pumping and air blowing, and steam and gas services.

Another kind of hose is designed for oil fields, called high-pressure return pipe. The hose is a constant working pressure hose with a rated maximum pressure of 1000 psi (70 MPa).
It has a thicker and more durable shell than other mining hoses. This makes it an ideal choice for high wear environments. It can also install connectors to improve the overall performance and reliability of the hose.
The hose can easily fall from its end connector, causing serious injury or even death. Therefore, it is important to correctly crimp and fix it. In order to limit the movement of the end connector, some hoses have whip constraints.
The hose is usually connected to the riser through a rotary joint, and then connected to the manifold through a series joint. The connector shall be chemically bonded to the hose assembly.
In addition, the hose shall be protected from vibration. If the hose is located in a narrow place, it may be impacted and bent, which is particularly important.
For this reason, Litong provides a series of hose connector protectors to provide additional protection for the hose and its connector. These protective devices can be installed at the end of the hose to prevent it from loosening from the connector, or they can be installed at the connector to limit the amount of vibration and impact that may occur.
These products are also supported by the manufacturer’s warranty. The standard hose has a pulse life of 1000000 cycles at 125 ℃ and can be used in a series of drilling, well water, cement slurry, hydraulic and other fluid transportation applications.
In addition to high-pressure and fire-resistant hoses, the company also produces oilfield drilling hoses that meet API 16C, which are suitable for drilling rigs and can be used as pressure relief hoses, blowout prevention hoses or choke and kill hoses.