BS ISO 6805:2020 pdf free.Rubber hoses and hose assemblies for underground mining一Wire-reinforced hydraulic types for coal mining一Specification. BS ISO 6805 This document 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...