Introduction to the Use and Characteristics of High-Pressure Steel-Wire-Braided Rubber Hose Assemblies

　　High-pressure steel‑wire‑braided rubber hose assemblies are primarily used in hydraulic supports for mining, oilfield extraction, construction engineering, lifting and transportation, metallurgical forging, mining equipment, marine applications, injection molding, agriculture, and various machine tools, as well as in mechanized and automated hydraulic systems across diverse industrial sectors, to convey petroleum‑based fluids under specified pressure and temperature conditions. These steel‑wire‑braided rubber hoses are designed and manufactured in accordance with GB/T 3683‑1992; they can also be produced to meet ISO/DIS 1436‑1985, DIN 20022, SAE 100R1AT, and SAE 100R2AT standards upon request. However, this standard is not suitable for castor‑oil‑based or lipid‑based fluids.

　　Overall functions of high-pressure steel-wire braided rubber hoses:

　　1. The rubber hose is formulated from a special synthetic rubber and exhibits excellent oil resistance, heat resistance, and aging resistance.

　　2. The hose bearing exhibits high pressure resistance and excellent pulse performance.

　　3. Tight bonding, soft to the touch, and minimal deformation under pressure.

　　4. It exhibits excellent flexural strength and fatigue resistance.

　　5. Wire‑braided hose lengths: models 32 and above can be connected in 20‑meter lengths, while those 25 and below can be connected in 10‑meter lengths or in lengths exceeding 100 meters.

　　High-pressure steel-wire-braided hose assemblies are primarily used to convey high-temperature, high-pressure kerosene, oil, and red oil—flammable and explosive media—in the hydraulic systems of aircraft fuel systems, mining hydraulic supports, oilfield extraction equipment, and construction machinery, thereby transmitting pressure.

　　Product structure: It consists primarily of a liquid‑resistant synthetic rubber inner liner, an intermediate rubber layer, steel wire braids in layers I, II, and III, and a weather‑resistant synthetic rubber outer liner. The inner liner withstands the pressure of the conveyed medium and protects the steel wires from corrosion, while the outer liner safeguards the steel wires from damage. The steel wire layers serve as the reinforcing skeleton, providing structural strength.

　　Microstructure of the high-pressure steel-wire-braided rubber hose assembly:

　　It is primarily composed of an inner liquid‑rubber layer, a middle rubber layer, and two, four, or six layers of steel wire, including a reinforcing layer and an outer rubber layer. The inner layer exerts pressure on the conveyed medium and protects the steel wires from corrosion. The outer adhesive layer safeguards the wire from damage, while the wire (0.3–2.0 reinforced wire) layer serves as the reinforcing skeletal material.

　　The synthetic rubber is primarily formulated from oil‑resistant nitrile rubber, compounded with specialized reinforcing agents, resulting in an inner rubber layer that exhibits strong adhesion, softness, and minimal compression set, while offering excellent flexural resistance and fatigue life. The outer rubber layer is made from a special synthetic rubber—a high‑molecular‑weight material with a higher density than conventional rubbers—thereby delivering outstanding abrasion resistance.

　　High-pressure steel-wire-braided hose assemblies are primarily used in hydraulic supports for mining and oilfield extraction. They are suitable for engineering construction, lifting and transportation, metallurgical forging, mining equipment, marine applications, injection molding machinery, agricultural machinery, various machine tools, and the mechanized and automated hydraulic systems of diverse industrial sectors, conveying petroleum-based fluids (such as mineral oil, solvent oil, hydraulic oil, fuel oil, and lubricating oil) and water-based fluids (such as emulsions, oil‑water mixtures) at specified pressures (including elevated pressures) and temperatures.