Two classes of rubber hoses and hose assemblies (smooth bore and semi-embedded) and one class of thermoplastics hose. The two classes of rubber hoses are further divided into two types according to their design working pressure.
BS 3165:1986 history
2009BS 3165:2009 Rubber suction hose and hose assemblies with semi-embedded wire helix for fire-fighting purposes - Requirements and test methods
1986BS 3165:1986 Specification for rubber and plastics suction hoses and hose assemblies for fire-fighting purposes