High Pressure Spiral Hose

High Pressure Spiral Hose for Heavy‑Duty Hydraulics

Engineered for constant high working pressures and shock loads, these spiral‑wire hydraulic hoses support mining, construction, energy, and industrial machinery.

Four or six layers of high‑tensile steel wire in spiral form help maintain stable pressure with low volumetric expansion for precise, leak‑resistant operation.

Key Advantages

• Tight control of raw materials and full batch traceability.


• Advanced spiral forming and end‑to‑end inspection.


• Flexible customization, quick technical support, and clear project updates (including video test records) when requested.


• Options for extreme temperatures and corrosive conditions, with proven field use.

Standards & Ratings

We build hoses and assemblies to EN 856 4SP/4SH, SAE 100R12/R13/R15, and ISO 18752. Constant‑pressure families cover 4000, 5000, and 6000 psi categories. Cover options include MSHA flame resistance and high‑ozone compounds for outdoor service.

Typical working pressures: 280–420 bar (EN 856 4SP/4SH) and up to 5000–6000 psi (ISO 18752 families). Sizes range from 3/8 in to 2 in (DN10–DN51). When paired with matched fittings, minimum burst pressures meet or exceed 4× working pressure.

Construction & Performance

• Tube: Oil‑resistant synthetic rubber for fluid integrity.


• Reinforcement: Four or six spiral‑wound steel wire layers for pressure stability and impulse resistance.


• Cover: Abrasion, weather, and ozone resistant; anti‑static, low‑temperature, and flame‑retardant options available.

Optimized rubber compounds and reinforcement angles reduce bend stress and heat build‑up. This supports tight bend radii and long impulse life to the specified standard for continuous‑duty circuits.

Fluids & Applications

Compatible with mineral oils, many synthetic hydraulic fluids, and biodegradable esters. Specialized tube compounds are available for fire‑resistant and phosphate‑ester media. Proper selection aligns chemistry and temperature with target service life.

Common uses include excavators and loaders, drilling and mining support equipment, hydraulic presses and injection molding, onshore/offshore energy systems, steel plants, and wind‑turbine pitch/yaw controls.

Selection Guide: Four‑Wire vs Six‑Wire

• Four‑wire spiral: Good balance of flexibility and pressure for compact routing.


• Six‑wire spiral: Higher pressure envelope and impulse life for large‑bore lines and harsh duty cycles.

Also consider routing space, cycling frequency, ambient and fluid temperatures, and media type. Specify spiral‑grade fittings (skive or no‑skive; interlock as needed). Protective sleeves and guards can be added to reduce wear and extend service intervals.

Quality & Delivery

Inspection covers raw‑material checks, dimensional control, proof and burst tests, impulse validation to the chosen standard, and electrical conductivity checks where required. We provide conformance statements, material declarations, and third‑party reports on request. Sampling aligns specs and test plans before production. Lead times are predictable, with progress updates and packaging suited for long‑distance transport.

FAQs

What is the main difference between four‑wire and six‑wire spiral reinforcement?

Six‑wire designs support higher pressures and longer impulse life, especially in larger sizes. Four‑wire variants offer better flexibility for tight routing at moderate high pressures.

Can these hoses be used with biodegradable hydraulic fluids?

Yes. Select the appropriate tube compound designed for ester‑based fluids and confirm temperature and compatibility with your medium.

How do I ensure the correct minimum bend radius?

Refer to the applicable standard and size. We can provide data for each hose family and help verify routing in your layout.

Contact High Pressure Spiral Hose Manufacturer

Discuss your operating pressure profile, fluid, temperature, routing, and target service life with our engineering team. Contact our High Pressure Spiral Hose manufacturer team to request a quote or arrange sampling.