CNC cutting slot/drill hole carbon fiber rectangular square tubing with 3K twill matte surface carbon fiber pipe is mainly composed by UD(unidirectional carbon fiber), The outside/ surface is 3K twill texture, The majority of our unidirectional carbon tubes are comprised of 0 and 90 degree plies with an occasional layup deploying 45 plies/30 plies. The carbon tubes surface are 3K twill woven fabric. We also can make 3K plain texture outside, Some people like 3K twill ,Some people like 3K plain woven fabric, The price between them(3K Twill/3K plain) is same, Strength is same. Carbon fiber pipe is high strength(7 times than steel),light weight(1/5 of steel), Corrosion resistant etc advantage, It is widely used many areas for example industry,sports equipment to replace metal tube. For install application, Carbon fiber pipe are request do CNC cutting, punching/slotting etc. Xinnuo also can supply CNC cut for carbon fiber pipes.