quality UV CIPP Equipment & UV Cured CIPP factory

.gtr-container-x7y8z9 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; padding: 20px; line-height: 1.6; max-width: 100%; box-sizing: border-box; } .gtr-container-x7y8z9 p { font-size: 14px; margin-bottom: 1em; text-align: left; word-break: normal; overflow-wrap: normal; } .gtr-container-x7y8z9 .gtr-title { font-size: 18px; font-weight: bold; margin-bottom: 1.5em; text-align: left; color: #0056b3; } .gtr-container-x7y8z9 strong { color: #0056b3; } .gtr-container-x7y8z9 img { max-width: 100%; height: auto; display: block; margin-bottom: 10px; border: 1px solid #eee; box-shadow: 0 2px 5px rgba(0,0,0,0.1); } .gtr-container-x7y8z9 .gtr-image-gallery { display: flex; flex-direction: column; gap: 15px; margin-top: 20px; } @media (min-width: 768px) { .gtr-container-x7y8z9 .gtr-image-gallery { flex-direction: row; flex-wrap: wrap; justify-content: space-between; } .gtr-container-x7y8z9 .gtr-image-gallery img { flex: 1 1 calc(50% - 7.5px); margin-bottom: 0; } } The 6th Trenchless Technology Development Forum & Exhibition 2025 in Shenzhen The 6th Greater Bay Area Trenchless Technology Development Forum and Exhibition 2025, hosted by the Guangdong Trenchless Technology Association, officially opened on September 4–6, 2025, at Hall 3 of the Shenzhen Convention & Exhibition Center, located in Futian District, Shenzhen, China. This flagship trenchless technology event brings together leading industry experts from Germany, Japan, and China, who are delivering keynote speeches and sharing the latest innovations and advancements in trenchless engineering and infrastructure rehabilitation. Running concurrently with the forum, the three-day trenchless technology exhibition showcases cutting-edge trenchless equipment, materials, and integrated solutions. The event serves as a premier platform for industry professionals to network, exchange knowledge, and explore business opportunities in the non-excavation pipeline rehabilitation sector. DaoYuNai, a leading manufacturer of trenchless pipeline rehabilitation equipment and materials, has been invited to participate in this high-profile exhibition, highlighting its latest innovations in no-dig drainage repair technology. This annual event plays a vital role in promoting the sustainable development of trenchless solutions across the Guangdong-Hong Kong-Macao Greater Bay Area, fostering international collaboration and driving the future of underground infrastructure modernization. Daoyunai was established in 2012 in Shanghai, with over 20 patents and certificates. We have two intelligent manufacturing bases and modern R&D and testing centers in Suqian, Jiangsu province, covering an area of more than 40000 square meters. Now we have sold more than 150 sets of UV equipment, and more than 1200km of UV liners. Daoyunai, Intelligently and Proudly Manufactured in China!

Introducing the Cutting-Edge Mini LED UV Curing Equipment for DN100-250 Lateral Pipes In a groundbreaking move, the latest innovation in UV curing technology has arrived with the unveiling of the Mini LED UV curing equipment designed specifically for DN100-250 lateral pipes. This state-of-the-art equipment is set to revolutionize the industry with its unparalleled efficiency and precision.   The Mini LED UV curing equipment boasts a compact design without compromising on performance, making it ideal for curing processes in confined spaces such as lateral pipes. Its advanced LED technology ensures rapid curing times while maintaining high-quality results, enhancing productivity and reducing downtime.   Equipped with a user-friendly interface, operators can easily control and monitor the curing process, ensuring optimal results every time. The versatility of this equipment allows for seamless integration into existing workflows, offering a seamless solution for various pipe diameters within the DN100-250 range.   Furthermore, the environmentally friendly LED technology used in this equipment significantly reduces energy consumption and eliminates the need for harmful chemicals, making it a sustainable choice for businesses looking to minimize their environmental impact.   With the introduction of the Mini LED UV curing equipment for DN100-250 lateral pipes, customers can expect faster curing times, improved efficiency, and superior results, setting a new standard in UV curing technology for the industry. Stay ahead of the curve with this innovative solution from Dao Yu Nai.  

International Exhibitions in April 2025   Daoyunai Energy Saving Technology Limited has been committed to manufacturing trenchless CIPP UV cure systems with liners and CCTV inspection crawlers for underground pipelines to service customers all over the world.   We will attend two shows in April 2025:   Exhibition: 26th China Environment Expo 2025 (IFAT Shanghai) Date: April 21-23, 2025 Address: Shanghai New International Expo Center Booth: W2 Hall A17   Exhibition: 28th China International Trenchless Technology Conference and Exhibition (ITTC Suzhou) Date: April 23-25, 2025 Address: Suzhou International Expo Center Booth: Hall C and Hall D Organizer: China Geological Society Trenchless Technology Professional Committee (CSTT)   Hope to see you there.  

Announcement for Dao Yu Nai 2023 Market Activities   Event: 14th International Conference on Pipeline Engineering and Non-Destructive Technology (ICPTT2013) Date: November 15th-18th, 2023 Venue: Sheraton Shanghai Jiading Hotel, Shanghai Organizers: Tongji University Sun Yat-sen University Zhengzhou University Shanghai Highway & Bridge (Group) Co., Ltd. Shanghai Institute of Disaster Prevention and Relief Shanghai Urban Construction Water Affairs Group Co., Ltd. Yangtze River Ecological Environmental Protection Group Co., Ltd. Shanghai Municipal Engineering Design & Research Institute (Group) Co., Ltd. China University of Geosciences (Wuhan) International Joint Research Center for Non-Destructive Technology of Underground Infrastructure Ba Dao Engineering Hospital   Event: 2023 China International Pipeline Expo-Shanghai Date: November 22nd-24th, 2023 Venue: National Exhibition and Convention Center (Shanghai), NECC (SHANGHAI) Concurrent Activities: China International Pipeline Congress 10th Forum on Non-Destructive Development of Underground Pipeline Engineering Forum on Underground Municipal Infrastructure and Information System Construction 2023 China Urban Flood Control and Drainage Emergency Forum Forum on Drainage System Improvement and Efficiency Enhancement Forum on Water Supply Security and Smart Water Management Forum on Urban Road Subsidence Disaster Prevention and Control China Municipal Pipeline Structure Technology Exchange Conference 5th Forum on the Development of Smart Urban Pipeline Networks China Urban Gas Safety Operation and Smartization Summit Forum on Comprehensive Pipe Corridor Development 2023 Smart Heating and Heating Operation Technology Summit  

Daoyunai attended the Trenchless Technology Conference 2022   In order to continuously and better promote the exploration and exchange of innovative scientific research achievements, new technologies, and advanced engineering experience in the field of pipeline engineering and trenchless technology and the collaborative research of complex problems, to promote the common progress of politics, industry, education, research and application in the field of pipeline and trenchless engineering, rapidly improve the level of pipeline construction in China, and serve the construction and renovation of urban underground pipeline infrastructure in China, our company DAO YU NAI energy saving participated in the 13th International Symposium on Pipeline Engineering and Trenchless Technology (ICPTT 2022) at Zhengzhou city,  Henan province, from Feb 23-25, 2023.   This conference and show are really important for the industry development in health. Contractors, manufacturers, asset owners, and institutes were involved.  

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Case Study: Trenchless UV Curing Rehabilitation for Large-Diameter Underground Drainage Pipe in Wenzhou, Zhejiang Project Overview:In March 2025, a challenging trenchless sewer rehabilitation project was successfully completed in Wenzhou, Zhejiang, involving the UV CIPP lining of a DN1800 underground drainage pipe. The project was executed using advanced UV curing technology, ensuring minimal disruption to the surrounding area while restoring the structural integrity of the large-diameter sewer pipeline. Key Challenges: Extra-Large Pipe Diameter (DN1800): The massive 1.8-meter sewer pipe required specialized trenchless pipe lining techniques. Heavy Material (Approx. 10 Tons): Transporting and installing the UV-cured CIPP liner demanded precision due to its weight. Buried Depth (3 Meters): The moderate burial depth required careful handling to avoid surface disturbance. Non-Disruptive Construction: As an urban drainage repair project, minimizing road closures and environmental impact was critical. Solution: UV CIPP Lining by Daoyunai Energy-Saving TechnologyThe rehabilitation used a high-strength UV-cured liner manufactured by Daoyunai Energy-Saving Technology (Suqian) Co., Ltd., a leader in CIPP pipe repair materials. The 90-meter-long liner was carefully inserted and then cured in place using UV light technology, creating a seamless, corrosion-resistant new pipe within the old one. Execution Process: Pipe Inspection & Cleaning: Prior to lining, the sewer pipe was inspected and cleaned to ensure optimal curing. Liner Installation: The 10-ton CIPP liner was pulled into the DN1800 pipe using a winch system and crane. UV Curing Process: A UV light train was deployed to harden the resin, forming a durable, jointless pipe. Quality Testing: Post-curing, the new pipe was inspected via CCTV sewer camera to confirm a perfect fit. Results: Fully Restored Pipeline: The trenchless pipe repair extended the lifespan of the municipal drainage system without excavation. Cost & Time Efficient: Compared to traditional dig-and-replace methods, UV CIPP lining saved both time and budget. Zero Surface Damage: The no-dig sewer repair prevented road closures and traffic disruptions. Why This Method? Best for Large Pipes: UV-cured CIPP is ideal for big-diameter sewer rehabilitation (DN1200+). Long-Term Durability: The new liner resists corrosion, roots, and cracks, reducing future maintenance. Eco-Friendly: No excavation means lower carbon footprint—ideal for sustainable urban drainage solutions. Conclusion:This DN1800 sewer pipe rehabilitation in Wenzhou demonstrates the effectiveness of trenchless UV curing technology for large-scale municipal drainage repairs. By partnering with Daoyunai Energy-Saving Technology, the project achieved a fast, durable, and non-disruptive solution, setting a benchmark for underground pipe rehabilitation in China.

Successful UV Liner Installation: Mini LED CIPP Solves Small Sewer Challenges Efficient Trenchless Repair for DN200 Sewers with Daoyunai’s Mini LED UV CIPP Equipment In April 2025, Daoyunai Energy Saving Technology Suqian Company successfully completed a UV liner installation in Suzhou, demonstrating the effectiveness of Mini LED UV CIPP technology for small-diameter sewer rehabilitation (DN100-DN250). This project highlights how trenchless UV curing can overcome challenges in tight spaces where traditional methods fail. Project Overview Location: Suzhou, China Pipe Diameter: DN200 Section Lengths: 20m, 30m, 40m Installation Period: March 30 – April 20, 2025 Key Technology: UV curing with Daoyunai’s fiberglass resin liner Equipment Used: Mini LED UV CIPP System (DN100-DN250 compatible) Challenges & Solutions The sewer pipes in this project were:✔ Small-diameter (DN200) with multiple bends✔ Short section lengths (20m-40m)✔ Located in confined spaces (riverbanks, villages)✔ Inaccessible to large machinery Traditional excavation or steam-cured CIPP would have been costly, disruptive, or impossible. Instead, Daoyunai’s Mini LED UV CIPP equipment provided:✅ Compact & portable design – Easy transport and setup in tight areas✅ UV-LED cold curing – No heat risk, energy-efficient operation✅ Fast installation – Reduced downtime compared to steam curing✅ High-quality resin liner – Durable, seamless pipe renewal Why UV CIPP Was the Best Choice No Excavation Needed – Avoided road closures and property damage. Precision Curing – UV-LED technology ensured even hardening without wrinkles. Eco-Friendly – Low emissions, no wastewater discharge vs. traditional methods. Long-Term Performance – The glass fiber resin liner resists corrosion and cracks. Customer Satisfaction The asset owners and contractors praised the results: Smooth, jointless pipe interior with no leaks Minimal disruption to surrounding areas Cost savings vs. dig-and-replace methods Daoyunai’s Mini LED UV CIPP System: Ideal for Small-Diameter Sewers This Suzhou case proves that UV trenchless repair is ideal for: Municipal sewer networks (DN100-DN250) Villages, historic areas, and narrow urban spaces Emergency repairs requiring fast turnaround Technical Advantages of Daoyunai’s Equipment ✔ Lightweight & portable – Fits where large rigs can’t✔ UV-LED efficiency – Lower power demand vs. mercury lamps✔ Real-time monitoring – Ensures proper curing✔ Customizable liners – For bends and varying pipe lengths Conclusion: The Future of Small-Pipe Rehabilitation is UV CIPP This Suzhou UV liner installation showcases how Daoyunai’s Mini LED UV CIPP technology delivers faster, cleaner, and more sustainable sewer repairs in constrained environments. Need a trenchless solution for small-diameter pipes?