With the acceleration of urbanization process and the improvement of environmental protection requirements, PE carat pipe, as an important engineering pipeline material, is continuously innovating along three clear technical directions. In terms of lightweight, through molecular structure optimization and the application of new additives, material weight reduction is achieved under the premise of ensuring performance, and transportation and construction costs are reduced. High-strength development is reflected in the enhancement of ring stiffness and impact resistance. Multi-layer composite technology and Computer-Aided Design are adopted to enable pipelines to withstand deeper soil cover and more complex geological conditions. Environmental breakthroughs mainly focus on recyclable materials and clean production processes. The development of 100% recyclable PE materials reduces energy consumption and carbon emissions in the production process. These three technical paths promote each other and jointly promote the development of PE carat pipes to be lighter, more durable and more environmentally friendly, providing more sustainable solutions for urban drainage, gas transportation and other projects. Industry experts said that in the future, we will continue to explore cutting-edge directions such as bio-based materials and intelligent monitoring to further improve the comprehensive performance and environmental friendliness of the pipeline system.