Discover CYCT's range of premium anti-corrosion materials designed to optimize field joint coating integrity and deliver long-lasting protection against thermal, chemical, and physical stresses.
Polyethylene (PE) heat shrinkable tapes constitute the primary defense line for buried and marine pipeline joint systems. Historically, pipeline corrosion at field joints accounted for over 70% of premature pipeline failures. High-density cross-linked polyethylene, when paired with specialized visco-elastic and copolymer hot melt adhesives, acts as a barrier to water moisture, electrolytes, oxygen, and cathodic disbondment stresses.
CYCT's technical roadmap addresses these vulnerabilities. By utilizing radiation cross-linked backing materials, our PE heat shrinkable tapes possess high shape memory, ensuring a robust shrink mechanism that conforms tightly to irregular geometries, such as flanges, valves, and weld beads. Our engineering process optimizes shear resistance and peel strength, preventing soil stress failures in challenging clay-laden and high-temperature soils.
Evaluating and choosing the correct pipeline coating technology is critical for design engineers. The following breakdown showcases how PE Heat Shrinkable Tapes perform compared to viscoelastic coatings and cold applied tapes under typical operating scenarios.
| Performance Metric | PE Heat Shrinkable Tape (CYCT System) | Cold Applied Tapes | Viscoelastic Coatings |
|---|---|---|---|
| Operating Temp Limit | Up to 85°C (specialty grades to 120°C) | Up to 50°C - 60°C maximum | Up to 80°C (requires backing protection) | Cathodic Disbondment | Excellent (<10mm at 65°C) | Moderate (susceptible to creep) | Exceptional (zero disbondment zone) |
| Mechanical Protection | High (Radiation cross-linked backing) | Moderate (requires outer wraps) | Low (requires structural outer shields) |
| Installation Complexity | Moderate (requires preheat & heat source) | Low (hand applied primerless) | Very Low (cold applied wrap) |
| Soil Stress Resistance | Outstanding (eliminates soil shear damage) | Poor to Moderate | Poor without outer compression wraps |
CYCT New Materials Company Limited (for short, CYCT) is a state-level high-tech enterprise integrating research and development, production, and sales of pipeline corrosion protection materials, buried pipeline detection services, and pipeline coating field application services into one integrated offering.
For over two decades, CYCT has dedicated itself to the development and production of pipeline corrosion protection materials. With leading testing and R&D capabilities, a professional R&D team, and a national CNAS-accredited laboratory, CYCT is established as a reliable long-term supplier of field joint coatings for PetroChina, Sinopec, PipeChina, and various local networks.
Additionally, CYCT has developed and introduced specialty corrosion protection materials including viscoelastic anticorrosion materials, special photo-curing sleeves for HDD protection, and polyurea coatings.
R&D Strength: CYCT partners with research entities such as the CNPC Pipeline Science Research Institute to provide in-service pipeline technical support, designs, cathodic protection solutions, and integrated pipeline protection services.
Staying ahead of environmental regulations and pipeline design innovations requires a clear forward-looking materials science roadmap.
Integrating micro-encapsulated corrosion inhibitors directly into the hot-melt copolymer adhesive layer. When micro-fractures occur due to soil shifting or mechanical impact, the capsules release active agents to passivate the steel and prevent moisture ingress.
Extending the continuous operational ceiling to 120°C for deep geothermal extraction and high-capacity hydrocarbon transmission. Developing proprietary cross-linking formulations that prevent backing relaxation and adhesive creep at elevated temperatures.
Developing solvent-free epoxy primers and low-smoke PE formulations that reduce VOC emissions during field application. This initiative meets strict international environmental rules, protecting installation crews and the surrounding ecosystem.
From municipal utility networks to subsea gas lines, CYCT provides tailored protection configurations built for specific environment classes.
Long-distance transport systems require high-durability coating solutions. CYCT's primary solution combines a solvent-free epoxy primer with a copolymer heat shrink sleeve. This 3-layer system matches the factory 3LPE main pipe coating, creating a continuous, seamless seal over the field joint weld.
Trenchless installations expose field joint coatings to high friction and shear forces. CYCT's fiberglass-reinforced heat shrinkable sleeves provide the mechanical toughness required for HDD pulls, protecting the underlying anticorrosion coating from scratches and tears.
How CYCT delivers cost-efficiencies and reliable delivery schedules to complex international pipeline projects.
We procure our base polymer resins and specialty additives from certified global chemical suppliers. Every batch undergoes density, melt index, and thermal stability checks in our CNAS laboratory before moving to extrusion. This ensures consistent physical properties in our backing materials.
Using high-energy electron accelerators, we control the cross-linking density of our PE backings. This molecular modification yields stable, reliable shape memory characteristics. As a result, the tape shrinks evenly and maintains tight radial pressure for decades.
From backing extrusion and adhesive compounding to slitting, packaging, and QA, CYCT manages the entire manufacturing sequence under one roof. This structural footprint minimizes supply chain touchpoints and delivers competitive cost-structures to our partners.
For international EPC contractors and asset owners, procuring anti-corrosion materials involves evaluating compliance risk, logistical lead times, and on-site support capabilities.
To serve global infrastructure projects, CYCT materials meet demanding international performance standards. We supply our products with certified compliance sheets, material safety data sheets (MSDS), and third-party inspection clearances.
Long-term performance relies heavily on proper surface preparation and application. Through partnership with the CNPC Pipeline Science Research Institute, CYCT offers complete field services, installation training, and inspector certification programs.
CYCT holds multiple industry memberships and certifications: Member of Council in Chinese Society for Corrosion and Protection (CSCP), Corporate Member of China Association of Petroleum Engineering Construction (CAPEC), AMPP (formerly NACE) corporate member, and qualified supplier for PetroChina, Sinopec, China Gas Group, and Indian Oil.
Find quick technical answers regarding material selection, installation parameters, and standard compliance from CYCT's engineers.
A 2-layer system consists of a radiation cross-linked polyethylene backing coated with a hot-melt copolymer adhesive. A 3-layer system introduces a liquid epoxy primer applied directly to the sandblasted steel surface before applying the heat shrinkable sleeve. The 3-layer system offers enhanced resistance to cathodic disbondment and a wider operating temperature range.
To achieve design-specified peel strength, the steel surface must be dry and free of oil, grease, scale, or rust. A near-white metal finish (Sa 2.5 according to ISO 8501-1) with a surface profile of 50-75 microns is required to ensure optimal mechanical bonding of the primer and hot-melt adhesive.
Yes. Standard PE sleeves can shift or tear under high shear stress when pulled through boreholes. CYCT's fiberglass-reinforced heat shrinkable sleeve provides mechanical protection, making it suitable for horizontal directional drilling and other demanding trenchless pipeline operations.
When stored in their original packaging, away from direct sunlight, moisture, and temperatures exceeding 35°C, CYCT's PE heat shrinkable products have a shelf life of up to 2 years, retaining their target shrink ratios and adhesive performance properties.
Explore our complete catalog of pipeline repair materials, primer configurations, and specialized PE tapes built to protect your critical assets.
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