Simple interlocking stripwound flexible metal conduits protected by galvanised steel braided sleeving. Made from Sendzimir hot-dip galvanised profiled stainless steel helical strip (UNI EN 10346:2009) with simple or reinforced interlocking. They provide excellent flexibility and good mechanical resistance together with good protection against electro-magnetic interference. They are used in industrial applications where a high level of thermal resistance is required. With TN connectors the system is without any plastic materials.