What is ISO 6805 about?
ISO 6805 specifies requirements for wire-reinforced hoses and hose assemblies for underground coal mining applications of nominal sizes 6,3 to 51 for use with:
- Oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743‑4 at temperatures ranging from −40 °C to +120 °C
- Water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743‑4 at temperatures ranging from −40 °C to +70 °C
- Water at temperatures ranging from 0 °C to +70 °C
Note: There is a possibility that operation at the extremes of or outside these temperature ranges materially reduce the life of the hose. These hoses are not suitable for use with fluids that have a castor oil or ester base.
Who is ISO 6805 for?
ISO 6805 on wire reinforced hydraulic hoses is useful for:
- Hydraulic hose manufacturers
- Mining companies
- Quality control personnel
- Maintenance personnel
- Health and safety executives
Why should you use ISO 6805?
Wire reinforced hydraulic hoses are the preferred hoses in the coal mining industry. These hoses supply the hydraulic fluid to the hydraulic-powered roof support used in coal mining. These hoses undergo constant pressure and withstand harsh conditions inside the mines. They need to constantly keep up the supply of hydraulic fluid to the pillars to maintain the structure of the mines. If the hoses or the hose assemblies malfunction it will compromise the safety of the mine and risk human lives.
ISO 6805 helps you to identify the appropriate materials for producing wire reinforced hoses and hose assemblies suitable for them. ISO 6805 informs you about the necessary requirements that the hoses and hose assemblies need to achieve to qualify for coal mining operations. ISO 6805 also provides references to the test method to test these requirements.
ISO 6805 will help you to produce wire reinforced hoses that are able to withstand the extreme conditions of a coal mining operation.
What’s changed since the last update?
BS ISO 6805:2020 replaces ISO 6805:1994, which has been technically revised. The main changes compared to the previous edition are as follows:
- The six types of hoses previously listed and replaced by specifying wire reinforced hydraulic rubber hoses in accordance with ISO 18752 have been eliminated while maintaining the special requirements for electrical resistance and flame resistance
- The fluids and temperature ranges in Clause 1 have been revised
- A new subclause, 6.4, for abrasion resistance has been added
