A spiral cable is a spiral wire formed by twisting one or several groups of insulated straight wires. The straight wire is bent on the metal core rod to complete the spiral state, and then through the drying room for 30 minutes to 120 minutes of thermal processing and shaping, and then cooled. The cooling method includes air cooling and water cooling. The resulting cable is in a spiral state and can be stretched (the time is determined by the temperature and the sheath material).

Spiral cables can be used for power, communication and related transmission purposes for mobile devices.
There is no uniform industry standard for the naming of spiral cables, and spiral cables are named using variants of RVV cables. Add the letter "T" at the end to stand for "spring". The last letter of RVV is replaced by the "U" of the PU sheath, forming the final code name "RVUT"
So the name of a category, combined with the model specification to replace the complete name,
For example, "RVUT3*0.5*5m" represents a 3-core 0.5 square spiral cable with PVC insulation and PUR sheath.
R: Represents the soft conductor structure. Spiral cables generally adopt soft conductor structure with good flexibility.
V: represents the material of the insulating layer, PVC insulating material.
U: represents the material of the sheath layer, PUR sheath material.
T: Represents a spring, that is, a spiral.
Number "3": Indicates that the number of insulated wires is 3 HAO
The number "0.5": indicates that the square of the conductor cross-section of the insulated wire is a copper conductor of 0.5 square.
The number "5M": indicates that the unfolded straight length of the cable is 5 meters, and the working stretched length of this kind of cable is generally 2.5 meters.

Advantages of spiral cable
The sheathed spiral cable made of polyurethane material has a wide range of applications and the best performance. Can also be used as cable for drag chain system
PUR spiral cable has many excellent chemical properties such as oil resistance, hydrolysis resistance, weak acid and weak alkali resistance, anti-aging, anti-ultraviolet, anti-microbial corrosion and so on. And a variety of excellent physical properties such as wear resistance, tear resistance, and good elasticity.
It has gradually become the dominant spiral cable to replace other types of spiral cables on the market. Highly flexible wires are suitable for mechanical tension, especially when there is abrasion,
It can be used under harsh conditions such as dry, humid, and rainy outdoors. Has good resistance to wear and tear.
Such cables can be widely used in electric tools, transportation equipment, and agricultural appliances.
Compared with the PVC spiral cable, the biggest disadvantage of this cable is the relatively high price.