2008BS EN 61386-1:2008 Conduit systems for cable management -Part 1: General requirements
2004BS EN 61386-1:2004 Conduit systems for cable management - General requirements
1994BS EN 50086-1:1994 Specification for conduit systems for cable management - General requirements
1982BS 6099 Sec.2.2:1982 Conduits for electrical installations. Particular specifications. Specification for rigid plain conduits of insulating material
1981BS 6099 Pt.1:1981 Conduits for electrical installations. Specification of general requirements