Company News

Yihuide Adds a Second Substrate Production Line to Strengthen Capacity and Delivery

As demand in domestic and international markets continues to grow, Yihuide's order volume has risen steadily and the existing substrate line has been operating at high capacity. To increase in-house production, ease substrate supply pressure and ensure on-time delivery, our second substrate production line has officially entered operation. The new line applies precise control over formulation, temperature, thickness and forming to produce high-quality substrate with a smooth surface, uniform thickness and stable performance. It provides a reliable foundation for the subsequent manufacture of heat-shrink tapes and related products. While expanding capacity, Yihuide continues to enforce strict quality control throughout the entire production process. The commissioning of the second line not only increases overall capacity, but also improves production planning, order response and delivery assurance. It is an important step in meeting sustained market demand and advancing Yihuide's development toward greater scale, specialization and quality. Every capacity upgrade reflects our commitment to the trust of our customers. Yihuide will continue improving its production system and upgrading equipment and processes, delivering professional pipeline corrosion-protection products and integrated solutions with stable capacity, reliable quality and efficient service.

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Company News2026-08-27

China Mainline District Heating Pipeline Project

District heating pipeline networks are a vital part of urban energy infrastructure. They play an important role in protecting people's livelihoods, improving living environments, and supporting high-quality urban development. The China Mainline District Heating Pipeline Project aims to create a safe, efficient, stable, and long-life heat transmission corridor, bringing lasting reliability to the city's heating system through modern pipeline construction. The project uses directly buried polyurethane pre-insulated pipes to transport hot water. The supply pipeline has a diameter of 1,680 mm, while the return pipeline measures 1,560 mm, and the maximum hot-water transmission temperature reaches 150°C. This large-diameter, high-temperature design demonstrates the scale and capacity of the project while placing demanding requirements on insulation performance, joint sealing, and long-term operational safety. At every pipe joint, electrofusion sleeves are combined with heat-shrink tapes to form a multi-layer sealing and protection system. This solution further improves sealing performance, durability, and corrosion resistance, laying a solid foundation for the safe and stable long-term operation of the network. Designed for a service life of at least 30 years, the entire pipeline system safeguards the city's heating lifeline with quality built to stand the test of time. Extending beneath the ground, these heating pipelines connect more than heat sources and the city—they connect thousands of households with the promise of a warm home. As construction continues, reliable heat energy will travel through the main network to communities across the city, providing dependable heating for residents and adding warmth and strength to urban development. From a single pipe to a citywide heating network, and from every joint to an entire public-service project, each construction step carries responsibility and every technical standard protects long-term safety. We will continue to apply professional expertise, rigorous standards, and a strong sense of responsibility to build lasting, high-quality projects—bringing safe, efficient, and dependable warmth to thousands of households and supporting a better life.

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R&D Update2026-08-20

Company Update | Advanced Production Equipment Introduced to Upgrade Production Lines and Strengthen Manufacturing Capability

To further increase production capacity, improve product quality, and strengthen our core manufacturing capabilities, we have introduced advanced domestic production equipment dedicated to heat-shrinkable sleeves. The new equipment has now officially entered production operation. The commissioning of this equipment marks another major upgrade to our production lines. With improved hardware capabilities, overall workshop efficiency has increased significantly and the level of production automation has risen substantially. This helps reduce human error and further improves process stability and product consistency. The equipment upgrade not only creates additional production capacity but also provides stronger hardware support for quality control across our heat-shrinkable sleeve and heat-shrinkable tape product lines, enabling us to better meet high-volume orders with demanding quality requirements. Looking ahead, we will continue investing in production processes, equipment, and R&D innovation, strengthening our manufacturing system to provide customers with reliable, consistently high-quality pipeline anti-corrosion products.

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R&D Update2026-08-12

R&D Update | Testing Progress on Next-Generation Hot-Melt Adhesive Heat-Shrinkable Tape for Steel Pipes

Recently, our team has been developing and iterating a new hot-melt adhesive formulation for heat-shrinkable tape designed specifically for steel-pipe surfaces. The new sample demonstrates extremely high peel strength, exceeding the measurement range of our current test equipment and preventing the instrument from recording a precise value. Manual peel testing further verified the bonding performance: the adhesive layer remained firmly bonded to the steel pipe with no interfacial debonding. Under external force, the heat-shrinkable tape backing stretched and failed cohesively, indicating that the adhesive-to-steel bond strength exceeded the strength of the backing material itself. Our R&D team will continue optimizing the formulation and test methods to further improve product stability, with additional test results to be shared as work progresses. Yihuide remains committed to technological innovation and to providing high-performance, reliable products for pipeline corrosion protection. Test video attached below—welcome to watch.

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Product Knowledge2026-08-06

Technical FAQ | Anti-Corrosion Heat-Shrinkable Tape: Core Technology, Applications & Installation Advantages

In pipeline corrosion-protection projects, selecting a material that can withstand demanding environmental conditions is essential to extending pipeline service life. To help customers better understand our product advantages and suitable applications, we have prepared this FAQ covering the core technology and key performance features of our products. Q1: What are the core materials and manufacturing structure of the product? A: Our products are primarily composed of a polyethylene (PE) backing laminated with EVA hot-melt adhesive. Outer Backing: Premium polyethylene is used as the main raw material and compounded with light stabilizers, antioxidants, tackifying resins, and polar materials to provide strong aging resistance and mechanical protection. Inner Hot-Melt Adhesive: High-performance EVA is the primary raw material. For applications with special high- or low-temperature requirements, our technical team can develop a dedicated customized adhesive formulation. Q2: What are the main quality advantages compared with similar products on the market? A: Our products compete on dependable quality, with three key installation advantages: Strong Bonding and High Peel Strength: The composite layer forms a very strong chemical and physical bond with the pipeline substrate, helping resist severe soil stress and mechanical damage. Excellent Conformability with No Edge Lifting: The product addresses the common problem of inferior materials lifting or opening after installation, helping maintain a dense and durable anti-corrosion barrier. Excellent Temperature Adaptability: The product has a high softening point and remains stable without adhesive flow at elevated temperatures. It also offers strong low-temperature installation performance, maintaining flexibility and bonding even in severe cold without becoming brittle or cracking. Q3: What types of pipeline projects are these products mainly used for? A: Thanks to their excellent corrosion-protection and sealing performance, our heat-shrinkable tapes and sleeves are widely used in three major applications: long-distance gas pipelines, pre-insulated heating pipelines, and water supply/drainage pipelines. Q4: Bonding conditions on long-distance gas pipelines can be very complex. How does the product perform? A: It performs extremely well. Long-distance gas pipelines present some of the most complex bonding substrates, but our high-adhesion hot-melt adhesive can bond to multiple materials, including steel, polyethylene (PE) outer coatings, residual solvents from coating layers, and dedicated anti-corrosion primers. This creates a dense, continuous seal that helps prevent moisture and corrosive media from entering. Q5: What are the installation characteristics for pre-insulated heating and water supply/drainage pipelines? A: In these applications, the bonding structure is relatively simple and generally requires adhesion only to the polyethylene (PE) outer layer. The excellent compatibility between the PE backing and EVA hot-melt adhesive, combined with high peel strength, makes installation fast and efficient while creating a tight, seamless-type seal between pipe components. 💡 Conclusion: Whether you are installing in extremely cold regions or working with complex long-distance pipeline substrates, we are committed to providing high-strength, reliable pipeline corrosion-protection solutions that resist edge lifting. If you have questions about our process or need a corrosion-protection solution and quotation for a specific project, feel free to contact us at any time. Email: demon@cntjyhd.com Phone / WeChat / WhatsApp: +86 18822051256

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Company News2026-08-01

15 Years Together | Yihuide Celebrates Its 15th Anniversary with a Family Banquet

On August 1, 2026, Tianjin Yihuide Anti-Corrosion Materials Co., Ltd. marked its 15th anniversary. The company hosted an anniversary family banquet, bringing together employees, their families, and the management team to celebrate this important milestone in a warm and welcoming atmosphere. After fourteen years of steady dedication, Yihuide has grown from a start-up into a professional manufacturer in the pipeline anti-corrosion materials industry. Every step of this journey has depended on the shared efforts of our employees, as well as the understanding and support of their families. The banquet was both a celebration of past achievements and a heartfelt thank-you to everyone who has moved forward together with the company. During the gathering, colleagues and families exchanged stories and took a full-team group photo, capturing a memorable moment together. Throughout its development, Yihuide has consistently valued team building and talent retention, relying on a stable and committed workforce to support product quality and reliable service delivery. At the new starting point of our 15th anniversary, the entire Yihuide team will continue to work together, deepen our expertise in anti-corrosion materials, strengthen our manufacturing capabilities, and serve customers in China and around the world as we move into the next stage of development.

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Company News2024-09-15

Nine Years of Dedication, A New Chapter | Yihuide Completes Factory Upgrade and Relocation, Advancing Capacity and R&D Systems

In 2020, as Tianjin Yihuide Anti-Corrosion Materials Co., Ltd. marked its ninth anniversary, the company completed a comprehensive relocation and upgrade of its production base. Facing the combined challenges of the industry environment and the COVID-19 pandemic, Yihuide continued investing in R&D, improving its production system, and strengthening its talent team, ultimately establishing a larger modern facility and achieving broad improvements in capacity, quality control, and R&D capability. Since its founding, Yihuide has remained focused on pipeline anti-corrosion materials. Over nine years, the company has followed a technology-driven development strategy, continuously investing in product R&D and process optimization while recruiting and developing professional technical and management talent. This has gradually built a complete technology and production system covering heat-shrinkable tapes, heat-shrinkable sleeves, repair materials, and related products. In 2020, external conditions placed significant pressure on operations, and the pandemic created multiple challenges for production, delivery, and project execution. The Yihuide team worked through these difficulties while maintaining stable order fulfillment, completing the planning, construction, and relocation of the new factory on schedule and moving into a larger, more standardized modern production base. The upgrade focused on four key areas—capacity, equipment, quality control, and R&D: • Production workshop space was expanded and equipped with automated production lines and advanced manufacturing systems, significantly increasing large-scale delivery capability; • Testing laboratories and the quality-control system were upgraded in parallel, with more detailed standards applied across the full production process; • R&D office space and laboratory conditions were improved, providing stronger hardware support for technology iteration and new-product development. The factory relocation and upgrade marked an important milestone in Yihuide's nine years of development and demonstrated the company's resilience and overall capabilities. From this new starting point, Yihuide will continue to deepen its expertise in anti-corrosion materials, providing global customers with more stable capacity, more reliable quality, and stronger pipeline corrosion-protection solutions.

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