Focus on making the reinforcing fibers more even and tight.Shape: roundCarbon content: 100% full carbonTechnology: wrapping, filament winding, pultrusionparameter:1) Diameter: 0.5 mm - 800 mm2) Length: 10 mm - 5000 mm3) Wall thickness: thickness 0.1mm-100mmCarbon fiber can replace many metals or other materials. It can be used to machine shafts, sports products, barrels, silencers, musical instruments, telescopes, etc. It is an ideal new material, and we can process custom tubes according to customer requirements.