Large-size carbon fiber pipe can be used in textile machinery, aluminum foil machinery, plastic film machinery, paper machinery, printing/dyeing machinery industry, packaging machinery, yachts, cruise ships, wind turbines, fan drives, industrial pump systems and cooling towers. . According to the customer case provided by Wuxi Zhishang New Material Technology Co., Ltd., a professional carbon fiber tube manufacturer in China, the advantages of carbon fiber tube for industrial machinery roller shaft are very prominent. Taking the non-woven mechanical shaft as an example, because the structure of the non-woven fabric is relatively special, compared with the conventional woven fabric, the strength of the fabric itself is small, and the elongation at break is relatively large, so the weight of the tension roller must be very light. When the width of the nonwoven fabric reaches or exceeds 4 meters, the weight of the conventional steel roll body increases a lot. In contrast, a non-woven mechanical roller made of a carbon fiber tube has a weight advantage, and even if the length is increased by several meters, the overall weight is limited. This not only meets the production needs of increased width, but also relieves the operator of a certain labor intensity.