The plastic-coated metal flexible conduit is a composite flexible pipe with high-quality metal flexible conduit as the base material and PVC/PUR plastic coating uniformly covered on the outer layer. It combines the compression resistance and tensile strength of metal with the corrosion resistance, wear resistance and insulation properties of plastic. It can be flexibly bent to adapt to various complex installation environments, and is widely used in cable protection and line laying in electrical, chemical, construction and other fields. 1. Inner Base Material: Made of high-quality stainless steel (304/316) or galvanized steel strip, formed and welded (or crimped) with precision to ensure the flexibility and structural strength of the pipe, which can bear a certain pressure and tensile force; 2. Outer Plastic Coating: Adopt environmentally friendly PVC or PUR material, which is closely attached to the inner metal through high-temperature extrusion coating process without falling off or wrinkling, playing the role of corrosion resistance, anti-aging and anti-scratch; 3. Interface Design: Can be matched with supporting joints (threaded joints, ferrule joints, etc.), with convenient installation and tight connection, effectively preventing dust and water vapor from entering the pipe and protecting the safety of cables.