Double interlocking metal pliable conduits coated in smooth polyurethane. Made from Sendzimir galvanised steel ribbon (UNI EN 10346 Standard), with helicoidal profile and double interlocking. The coating is made of polyuretane with a low level of toxic and corrosive gas emission, halogenfree, with a smooth external surface and thread fastening. These conduits are resistant to inks, synthetic oils and grease and have excellent flexibility and really good mechanical resistance when subjected to traction stresses. Resistant to UV light, abrasion and corrosion, even at very low temperatures, these conduits are well suited to outdoor applications.