Features:

* Out layer of resin material: PE, ABS.
* In the middle is the Dupond hot melt adhesive  
* The inner material is steel strip (195L)
* The inner is the anticorrosive coating
   Standard diameter: 28MM (general size in domestic)
   Pipe wall thickness: 0.8/1.0/1.2/1.5/2.0 (MM).
   Pipe inner diameter: 24.5 ~ 24.7MM
   Resin thickness: 28 - (24.5 ~ 24.7)- pipe wall thickness
   Tube length: regular 4M, 6M, 8M, etc., or customize allowed
   Color of Flexible Line Stick: cream, white, black (conductive), green, red, silver and blue