Explore our industrial-grade joint coatings, heat shrinkable sleeves, and repair systems engineered for long-term pipeline integrity.
In the modern energy and utilities transportation landscape, buried steel pipelines serve as the global vascular system for crude oil, natural gas, municipal water, and chemical slurries. Protecting these assets from the unrelenting electro-chemical degradation of soil and moisture is paramount. Polyethylene (PE) Pipe Sleeves, specifically heat-shrinkable wraparound sleeves and tubular systems, represent the engineering industry gold standard for Field Joint Coatings (FJC).
Globally, engineering specs require that the field-welded joint matches the performance profile of the factory mill-applied 3-Layer Polyethylene (3LPE) or 2-Layer Polyethylene (2LPE) mainline coating. A failure at the joint compromises the entire system, leading to localized cathodic disbondment, pitting corrosion, and environmental hazards. As energy infrastructure transitions into harsher terrains (deepwater offshore, geothermal environments, tundra regions, and high-consequence urban corridors), the demand for high-shear, high-adhesion PE sleeves has skyrocketed.
A State-Level High-Tech Enterprise dedicated to pipeline corrosion control research, production, and field engineering.
CYCT New Materials Company Limited is a premier manufacturer integrating advanced polymer chemical R&D, commercial-scale production, and technical advisory services. Since our founding in 2000, we have focused on providing the global pipeline industry with robust field joint coatings and repair solutions.
CYCT owns leading testing and R&D capabilities, supported by a professional R&D team and a national CNAS-accredited laboratory. This accreditation guarantees that every batch of raw polyethylene resins, viscoelastic polymers, and radiation cross-linked backings complies strictly with domestic and international safety standards.
Through long-term strategic cooperation with top-tier research institutes, such as the CNPC Pipeline Science Research Institute, CYCT is capable of diagnosing complex pipeline degradation and providing tailored remediation designs, cathodic protection analysis, and rehabilitation project engineering. We are a trusted supplier of field joint coatings for PetroChina, Sinopec, PipeChina, China Gas Group, and Indian Oil.
Why procurement teams and EPC contractors choose CYCT for critical infrastructure projects.
Our PE backings undergo high-energy electron beam radiation to create a memory-retentive polymer matrix. When heated, the sleeve shrinks uniformly, creating a high-stress mechanical grip around the steel joint.
We formulate custom copolymer hot-melt adhesives and viscoelastic mastic compounds. These adhesives flow under heat to fill surface irregularities and bond directly with the factory-applied epoxy or PE mainline coating.
Every product run is tested for peel strength, lap shear, hot water immersion resistance, cathodic disbondment, and thermal aging. Fully certified to ISO 21809-3, EN 12068, and NACE RP0303 guidelines.
Understanding which field joint system is appropriate for your specific environmental conditions and geological configurations.
| Product Category | Main Materials | Max Operating Temp | Primary Application Fields |
|---|---|---|---|
| Heat Shrinkable Wraparound Sleeves | Radiation Cross-linked PE + Hot-melt Copolymer | Up to 80°C (FRDP series) | Oil, Gas, and Water Transmission pipelines (Field welds) |
| PP Heat Shrink Sleeves | Cross-linked Polypropylene + PP adhesive | Up to 110°C / 120°C | High-temperature deep-well oil projects, steam-injection lines |
| Visco-Elastic Tapes & Putty | Non-crystalline low-viscosity polymers | -30°C to 70°C | Irregular fittings, valves, flanges, T-joints, and repair works |
| Photo-Curing GRP Sleeves | Glass Fiber Reinforced Plastics (UV curable) | High Mechanical Resistance | Horizontal Directional Drilling (HDD) casing and pull-back protection |
Trenchless construction methods, such as microtunneling and Horizontal Directional Drilling (HDD), subject pipeline coatings to extreme shear forces, abrasion, and soil gouging. Traditional heat shrink sleeves can buckle or peel when dragged through rock-strewn boreholes.
To mitigate this, CYCT developed the Photo-Curing Protective Sleeve (GRP Sheets) and high-performance Epoxy FRP Solutions. These products act as sacrificial mechanical shields over the primary corrosion coating. Cured by ambient solar UV rays or portable lamps, the glass-reinforced polymer reaches rock-hard compressive strength, guaranteeing zero-defect pullbacks.
A look at our national laboratory testing, precision manufacturing equipment, and professional accolades.
Member of Council in Chinese Society for Corrosion and Protection (CSCP), High-Tech Enterprise, and Approved Supplier.
CYCT's products comply with high engineering specifications. We are corporate members of the China Association of Petroleum Engineering Construction (CAPEC), AMPP (Association for Materials Protection and Performance), and maintain certifications for pipeline detection and corrosion prevention construction.
Our company certificates and products certificates ensure that global EPC contractors can source with confidence, meeting the rigorous standards of major state corporations like PetroChina, Sinopec, and international utilities companies.
Ensure total system protection with our field joint coatings, specialty viscoelastic tapes, and heat-shrink tubes.
Providing clarity on common engineering questions, compliance standards, and installation parameters.
CYCT
