Metal hose connector is a kind of high-quality flexible pipeline in modern industrial pipelines. It is mainly composed of bellows, net sleeves and joints. Its inner tube is a spiral or ring-shaped thin-walled stainless steel corrugated tube, and the outer mesh sleeve of the corrugated tube is woven by stainless steel wire or steel belt according to certain parameters. The joints or flanges at both ends of the hose are matched with the joints or flanges of the customer's pipeline. The corrugated pipe of the hose is formed by high-precision plastic processing of seamless or welded stainless steel pipes with extremely thin walls. Due to the elastic characteristics of the bellows contour, the hose has good flexibility and fatigue resistance, making it easy to absorb various cyclic loads of movement and deformation, especially in the pipeline system, which has the ability to compensate for large displacements. Media visualization (media visualization), process automation.

The metal hose joint is composed of a metal pipe body, a stainless steel wire mesh sleeve and a joint piece. In the marine pipeline system, it is mainly used in the connection between the pipeline and the equipment where the pipeline medium is oil or fresh water, which can compensate a certain relative displacement and achieve the effect of vibration and noise reduction. However, if the selection is improper, not only the effect of vibration isolation and noise reduction will not be achieved, but the damage of the metal hose will cause problems such as pipeline leakage and even equipment failure.

The selection of metal hose mainly includes the correct selection of parameters such as diameter, connection type, working pressure, temperature correction, minimum bending radius and hose length. The diameter, connection type and working pressure directly depend on the requirements of the piping system. Generally, there will be no problems. As the pressure-bearing capacity of the pipe increases, its bending capacity is greatly reduced. The temperature correction and the minimum bending radius are fixed for the product and are given by the manufacturer. What we often have problems with is the selection of the length of the metal hose. Too long a hose will cause instability, increase flow resistance, and additional mechanical damage and vibration problems. If the hose is too short, it may not be able to achieve compensation and vibration reduction. Elimination of noise and other purposes will also cause excessive bending stress and affect life. The following only introduces the selection of hose lengths in two typical cases commonly used in marine pipelines.