Industrial-grade rubber hoses, whether the medium is water, gas, oil, chemicals or others, usually consist of inner rubber, outer rubber and intermediate layers. The middle layer is usually braided, which strengthens the strength of the hose.
In addition, there are commonly embedded steel wires between the inner and outer rubbers, which are suitable for vacuum negative pressure operations.
There are also conductive wires, which are suitable for working environments where sparks are forbidden, such as fuel.
