ONORM E 6548-1996 Electrical installation material - Pliable corrugated insulating conduits, halogenfree, for light, medium or heavy mechanical stress, non flamepropagating
1996ONORM E 6548-1996 Electrical installation material - Pliable corrugated insulating conduits, halogenfree, for light, medium or heavy mechanical stress, non flamepropagating