本文件规定了六种钢丝编织增强软管和标称尺寸为5至51的软管组件的要求。本文件还规定了2SN和R2AT型标称尺寸为63的软管，以及2SN型标称尺寸为76的软管。 它们适用于: -ISO 6743-4中定义的油基液压油HH、HL、HM、HR和HV，温度范围为-40°C至+100°C； -ISO 6743-4中定义的水基流体HFC、HFAE、HFAS和HFB，温度范围为-40°C至+70°C； -温度在0°C至+70°C之间的水。 本文件不包括端部配件的要求。它仅限于软管和软管组件的要求。 注:用户有责任与软管制造商协商，确定软管与所用流体的相容性。

This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and R2AT, and the hose of nominal size 76 for type 2SN. They are suitable 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 +100 °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. This document does not include requirements for end fittings. It is limited to requirements for hoses and hose assemblies. NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of the hose with the fluid to be used.