Premium corrosion prevention products engineered to withstand high operating temperatures, mechanical stress, and harsh chemical environments.
Modern industrial and municipal pipeline networks operate under increasingly demanding conditions. High-temperature pipelines transporting crude oil, natural gas, steam, and chemical fluids are subject to severe thermal expansion, chemical attack, and mechanical stresses. Protecting the field joints—the weakest links in any pipeline network—requires reliable material technologies. Standard heat shrink sleeves often degrade when subjected to prolonged temperatures above 60°C, leading to adhesive shearing, water ingress, and localized corrosion.
As a leading Chinese supplier of high-temperature shrink wrap and protective sleeves, CYCT New Materials has engineered a comprehensive suite of cross-linked polyolefin, viscoelastic, and composite fiber systems. These materials maintain their performance up to continuous service temperatures of 120°C and above, offering long-term stability and cathodic disbondment resistance.
Our sleeves utilize electron-beam radiation to cross-link the molecular structure of high-density polyethylene (HDPE) and polypropylene (PP). This transition gives the backing "elastic memory," allowing it to shrink tightly onto the pipe joint while maintaining chemical and thermal stability.
State-level high-tech enterprise integrating R&D, production, sales, buried pipeline detection, and pipeline coating services.
CYCT New Materials Company Limited (for short, CYCT) is a recognized leader in pipeline corrosion protection materials. For over two decades, CYCT has dedicated itself to R&D and production of advanced anti-corrosion solutions. Our core focus lies in providing robust field joint coatings and repair systems that ensure pipeline safety under diverse terrain and environmental challenges.
We boast a state-of-the-art testing and R&D facility, complete with a professional team of material scientists and a national CNAS-accredited laboratory. This enables us to maintain strict quality control and continually pioneer new solutions, including viscoelastic anticorrosion materials, special photo-curing sleeves for Horizontal Directional Drilling (HDD) protection, and polyurea coatings.
CYCT is a trusted, stable supplier of field joint coatings to energy companies like PetroChina, Sinopec, PipeChina, and Indian Oil, commanding a high domestic market share and expanding its presence across global infrastructure projects.
Through partnerships with research centers like the CNPC Pipeline Science Research Institute, CYCT delivers services that go beyond product manufacturing. We offer comprehensive solutions for in-service pipelines, including buried pipeline detection, custom coating design, cathodic protection assessments, pipeline rehabilitation, and complete system design.
Our products comply with international specifications including ISO 21809-3, EN 12068, and NACE SP0169. This makes CYCT's high-temperature shrink wrap and mastic tapes suitable for oil and gas installations globally.
Choosing the right protection scheme based on pipeline operation temperatures, installation methods, and mechanical stresses.
| Pipeline Coating System | Max Operating Temp | Mechanical Resistance | Primary Application Scenarios | Key Material Components |
|---|---|---|---|---|
| 3LPP Heat Shrink Sleeves | Up to 120°C | Very High | High-temp crude oil transmission, offshore field joint coatings, directional drilling. | Polypropylene backing + copolymer adhesive + liquid epoxy primer |
| 3LPE Heat Shrink Sleeves | Up to 80°C | High | Standard onshore oil & gas trunk lines, water distribution pipelines. | Cross-linked HDPE backing + shear-resistant hot-melt adhesive + epoxy primer |
| Viscoelastic Anticorrosion Tape | Up to 95°C (VT95) | Medium (Requires Outer Wrap) | Complex pipeline fittings, flange connections, pipe elbow repairs, rehabilitation. | Non-crystalline viscous polyolefin copolymer paste |
| Fiberglass Reinforced (FRP) Sleeve | Up to 100°C | Extreme | HDD (Horizontal Directional Drilling) trenchless pull-back protection, rocky soils. | Epoxy-impregnated fiber structural reinforcement layer |
| Mastic Tape Systems | Up to 60°C | Medium | 2LPE steel pipeline joint coating, distribution lines, localized repair wraps. | Polyethylene backing with thick butyl rubber mastic adhesive |
CYCT's dedication to research, manufacturing compliance, and industrial verification verified by international third-party bodies.
CYCT holds council membership in the Chinese Society for Corrosion and Protection (CSCP) and the China Association of Petroleum Engineering Construction (CAPEC). Our production facility operates in strict accordance with ISO 9001, ISO 14001, and ISO 45001 standards, ensuring safety, reliability, and environmental responsibility at every step.
Our material chemistry research focuses on the molecular design of thermoplastic hot-melts and cross-linked backings, preventing issues like cracking, adhesive creep, and moisture permeation in high-temperature installations. In addition, our field service division holds official qualifications for Corrosion Protection Construction and Pipeline Detection Services, allowing us to offer complete engineering support from start to finish.
With an active membership in AMPP (Association for Materials Protection and Performance, formerly NACE/SSPC), CYCT's engineers test each batch of material for:
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From trenchless crossings in sub-zero terrains to deep sea installations, explore how high-temperature shrink wrap protects vital infrastructure.
Trenchless construction exerts high shear and abrasive force on pipeline coatings during pull-back. Regular heat shrink sleeves can buckle or tear under these forces. Our combination of Fiberglass Reinforced Sleeves (FRP) and Moisture Curing Shields forms a rock-hard composite shell over the joint, safeguarding the primary corrosion coating from mechanical damage.
Thermal oil pipelines and insulated steam grids subject the pipe body to constant thermal cycling. CYCT's PP field joint systems and solvent-free epoxy primers resist thermal degradation up to 120°C, maintaining adhesion to the steel pipe and preventing water ingress.
Offshore lay barges require fast-acting field joint systems that cure and shrink quickly to match the cycle time of laying pipe. CYCT's PP heat shrink sleeves and solvent-free high-temperature epoxies bond rapidly to line pipe coatings, providing resistance to subsea water immersion and high pressures.
As pipeline operators seek to maximize efficiency, operating temperatures are projected to increase. CYCT is actively researching next-generation smart materials, including shape memory polyurethane-based heat shrink systems capable of resisting continuous service temperatures of 150°C. Additionally, our R&D team is developing self-healing adhesive systems that use microcapsule technology to automatically repair micro-cracks before moisture can reach the steel substrate.
Explore our full line of specialized viscoelastic tapes, repair patches, polyurethane bend restrictors, and pipeline reinforcement technologies.
Get answers to engineering questions about pipeline coatings, material selection, installation parameters, and compliance standards.
Polyethylene (PE) heat shrinkable sleeves are typically rated for operational temperatures up to 60°C or 80°C. For pipeline systems operating at higher temperatures (ranging from 90°C up to 120°C+), Polypropylene (PP) heat shrinkable sleeves are recommended. PP provides superior mechanical strength, high resistance to soil stress, and maintains adhesion under elevated thermal loads.
The liquid epoxy primer forms the primary barrier against corrosion, chemical attack, and cathodic disbondment by bonding directly to the blasted steel surface. The subsequent copolymer adhesive layer bonds the backing to this epoxy layer, creating a continuous, impermeable, three-layer protection scheme.
Viscoelastic tape, such as our VT95, consists of non-crystalline polyolefin-based compounds that remain viscous. It flows into irregularities on the steel surface, providing self-healing protection. Because it does not cure, it resists cracking and degradation caused by expansion and contraction in thermal-cycle services up to 95°C.
For Horizontal Directional Drilling (HDD), we offer a multi-layer system featuring a primary heat-shrink sleeve protected by a Fiberglass Reinforced Plastic (FRP) outer wrapping and a Moisture Curing Shield. This composite armor protects the corrosion barrier from scraping, impact, and shear forces encountered when pulling the pipe string through rocky or abrasive soil.
Key parameters include steel preheat temperature, surface cleanliness (typically ISO 8501-1 Sa 2.5), anchor pattern depth, uniform primer wet-film thickness (WFT), sleeve shrinking temperature, and the absence of air bubbles or wrinkles under the backing. Adhering to these specifications prevents cathodic disbondment and water ingress.
CYCT's anti-corrosion products are tested to comply with international industry standards, including ISO 21809-3, EN 12068 Class C, NACE SP0169, and AWWA C214. Our laboratory is nationally accredited by CNAS, confirming that each batch is tested for peel strength, lap shear, hot-water immersion, and impact resistance.
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