Tianjin Yihuide Anti-Corrosion Materials Co., Ltd.

Professional Manufacturer of Heat-Shrinkable Tapes & Sleeves

Putting Customers First

Exceptional Value

Product Center

Complete Solutions for Pipeline Anti-Corrosion Materials

Heat-Shrinkable Tape

High-performance heat-shrinkable tape engineered for pipeline corrosion protection, offering excellent sealing and anti-corrosion performance for a wide range of pipe diameters and operating conditions.

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Wraparound / Tubular Heat-Shrinkable Sleeves

Made from premium radiation-crosslinked polyethylene and formulated with a dedicated hot-melt adhesive to provide 360° corrosion protection and ensure long-term, stable performance of pipeline joints.

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Pipeline Joint Anti-Corrosion Materials

Specialized corrosion-protection materials for pipeline weld joints, certified to ISO 9001/14001 management systems and tested by CNPC-authorized institutions, with performance benchmarked against mainstream industry standards.

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Why Choose Us?

Factory Direct · Quality Assured · Exceptional Value

Technology-Driven · Exceptional Value

We eliminate unnecessary marketing costs and brand premiums, investing 100% of our resources in proprietary formulation R&D and production-line upgrades. By advancing core technologies, we reduce manufacturing costs while delivering quality that exceeds mainstream industry standards.

Strict Source Control · Consistent Quality

We maintain a rigorous quality-control system, from incoming inspection of high-standard raw materials, through detailed checks at every production stage, to final factory inspection. No defect is overlooked, and every batch of anti-corrosion material is built to withstand demanding engineering environments.

Try Before You Buy · Full-Cycle Support

Confidence comes from capability. We offer a low-risk purchasing experience: samples first, order after you are satisfied. Real test data helps you make the decision, while our technical team provides seamless support from product selection through field installation.

Tianjin Port Advantage · Fast Delivery

Our factory is located next to Tianjin Port, the largest port in northern China. This strategic location gives us strong international logistics and port-consolidation capabilities, significantly shortening transit times and helping every order reach the project site efficiently and on schedule.

Company News

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.

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.

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.

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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About Yihuide

High-Tech Enterprise · In-House R&D and Manufacturing

Located in Tianjin Binhai New Area, adjacent to Tianjin Port, we operate a modern 13,333 ㎡ production base. Yihuide is a high-tech enterprise specializing in pipeline anti-corrosion materials such as heat-shrinkable tapes and sleeves, with strong in-house R&D and manufacturing capabilities.

We remove unnecessary brand-marketing costs and invest our core resources in product technology R&D and the independent design and iteration of production equipment. By customizing and rebuilding key production lines, we control quality consistency from the source and maximize production efficiency, giving our products a highly competitive value advantage.

Our products are fully covered by ISO 9001/14001 management-system certification and authoritative testing designated by China National Petroleum Corporation (CNPC), with performance benchmarked against mainstream industry standards. Leveraging the logistics advantage of Tianjin Port and our factory-direct cost structure, Yihuide is committed to supplying stable, reliable, high-value products for pipeline projects worldwide.

13,333

㎡ Production Base

ISO

ISO 9001/14001 Certified

CNPC

CNPC-Authorized Testing

Factory Direct

Factory-Direct Price Advantage

Corporate Culture

Quality at the Core · Integrity in Action

「We let our products speak for themselves—no hype and no false marketing. Every anti-corrosion product leaving our factory represents a serious commitment to quality. Give our products one opportunity to perform under demanding field conditions, and the confidence they deliver will speak for itself.」

Mutual Benefit, Steadfast Progress

「We always stand in your perspective to think and make choices. With an altruistic heart, we strive to make every detail ultimate and solve every pain point. Only with sincerity and professionalism can we win long-term trust.」