Illustration: hose lines protected against chafing on mining equipment
EN 856 4SP / 4SH standards
Spiral Hoses — Extreme
Engineered specifically for heavy excavation and mining operations. The 4SP incorporates four spiral steel wire plies for medium impulse duty; the 4SH maximizes working pressure to the highest ratings in standard ranges, with enhanced external abrasion resistance.
Extreme pressure
Abrasion resistance
Mining & quarrying
Technical characteristics
| Applicable standards | EN 856 4SP & EN 856 4SH / ISO 3862 |
|---|---|
| Reinforcement | 4 cross-wound spiral plies of very high tensile steel |
| Outer cover | High-tenacity synthetic rubber resistant to ozone and severe chafing |
| Temperature range | [TO PROVIDE: minimum temperature] to [TO PROVIDE: maximum temperature] |
| Compatible fluids | Mineral hydraulic oils, water-based emulsions, heavy lubricants |
| Available diameters | [TO PROVIDE: range of nominal diameters DN] |
Key strengths & applications
Extreme sectors
Built for drilling rigs, mining excavators, crushers and high-tonnage loaders.
Anti-abrasion shield
Outer cover specifically treated to resist flying rock and continuous chafing.
Peak pressure
The 4SH holds the highest working pressures available in the standard range.