SANS 60614-2-3-1990 电气安装用导管规范.第2部分:导管特殊规范.第3节:绝缘材料柔韧导管
Specification for conduits for electrical installations Part 2: Particular specifications for conduits Section 3: Pliable conduits of insulating material
Specifies requirements for pliable non-flame propagating plain and corrugated conduits of insulating material. Also applies to corrugated conduits with a smooth exterior surface.