Product description：
Usps Mailing Tubes
3-ply spiral wound construction for strength.
Eco-Friendly Materials Available
Tubes are reusable and recyclable.
Tube Inner diameter:20mm~140mm
Tube Wall thickness:1mm~8mm
Advantages and characteristics：
1、Good solution to replace carbon fiber core in capacitor film, dry film, optical film and other supper thin film product winding.
2、Applicable in cooper foil, Al foil and other thin metal foil hi-speed winding.
3、More application in thermo paper, photo paper, NCR and solar film winding.
4、Cleanliness meets the requirement of pharmacy, food packing material winding.
https://hengfengpack.com/usps-mailing-tubes.html
