Premium corrosion protection tapes, heat shrink sleeves, and pipeline repair solutions engineered in compliance with global offshore standards.
Marine structures, offshore energy lines, and deep-water transport systems exist in a state of constant exposure to aggressive elements. The combination of high salinity, mechanical wave impact, cathodic disbondment pressures, and intense UV rays demands specialized material science. General-purpose heat shrinkable products are entirely inadequate for these deployment scenarios.
Our Marine Heat Shrink Tubing and joint protection sleeves leverage advanced cross-linked polyolefin backing. Radiation cross-linking alters the molecular structure of the polymer, shifting it from a linear thermoplastic into an interconnected three-dimensional matrix. This provides an exceptional elastic memory, structural integrity at high temperatures, and high resistance to environmental stress cracking (ESCR) under ASTM standards.
Additionally, the inner layer uses hot-melt co-polymer adhesives or viscoelastic mastics designed to block moisture penetration, ward off galvanic corrosion, and prevent bacterial degradation under mud lines. Through rigorous development with domestic institutes, CYCT continues to advance polymer science to protect global energy networks.
Tested inside our nationally accredited CNAS laboratory to verify stability under conditions that simulate deep-water deployment.
CYCT New Materials Company Limited (for short, CYCT) is a state-level high-tech enterprise integrating R&D, production, and sales of pipeline corrosion protection materials as well as buried pipeline detection services and pipeline coating field application services into one.
For decades, CYCT has committed itself to the R&D, production, and sales of pipeline corrosion protection materials. Today, we stand as a key partner for massive state-owned and international oil and gas operators. CYCT maintains leading testing and R&D capabilities, supported by a professional R&D team and a national CNAS-accredited laboratory.
CYCT is a stable supplier of field joint coatings for PetroChina, Sinopec, PipeChina, and local pipeline operators, commanding a major market share in China's energy corridors. Through strategic collaborations with leading R&D bodies such as the CNPC Pipeline Science Research Institute, we provide comprehensive technical services. This includes buried pipeline detection, design schemes, cathodic protection, rehabilitation projects, and integrated solutions for pipeline safety.
Our product portfolio features specialty corrosion protection materials, including viscoelastic coatings, specialized photo-curing sleeves for Horizontal Directional Drilling (HDD) protection, polyurea coatings, and high-strength bend restrictors for offshore applications.
Deploying reliable protection technologies designed to withstand high salinity and extreme physical stress.
We design multi-layered coatings featuring cross-linked polyolefin backings and thick, viscous mastics. This provides a robust barrier against chloride ion penetration, moisture migration, and high shear stress in offshore splash zones.
Offshore pipelines depend heavily on cathodic protection (CP) systems. Our marine sleeves and viscoelastic tapes are formulated to prevent disbondment, shielding the steel joint while remaining compatible with active CP currents.
Designed for offshore wind inter-array cables and subsea power lines. High-ratio, heavy-wall heat shrink tubing provides reliable dielectric insulation, mechanical strain relief, and water-tight sealing at transitions.
As offshore oil and gas developments push into deeper waters, global developers require material suppliers that offer certified consistency and high volume production capacity. CYCT operates advanced extrusion, expansion, and adhesive compounding lines, allowing us to supply large-scale projects globally.
Our presence as an approved supplier to Indian Oil and our long-term supply arrangements with PetroChina, Sinopec, and PipeChina demonstrate our ability to meet stringent quality requirements. We address logistics, custom sizing, and technical document packaging to support fast mobilization schedules. Our strategic partnerships with pipeline design institutes allow us to provide comprehensive pipeline field joint protection designs tailored to local soil, depth, and temperature profiles.
Engineered for durability under diverse environmental and operating conditions.
Risers in tidal splash zones undergo constant dry-wet cycles and wave impact. Our heavy-walled heat shrink sleeves provide a tough barrier against weathering and mechanical damage, keeping the steel structure insulated.
Sleeves used in pull-through shore crossings must resist extreme shear forces. Our specialized photo-curing protective sleeves and tough heat-shrinkable sleeves prevent coating damage during pullback.
For pipelines carrying pre-heated crude oil, our polypropylene heat-shrinkable systems and high-temperature epoxy primers provide stable protection at continuous operating temperatures up to 80°C.
CYCT's technical roadmap focuses on the development of smart, self-healing, and eco-friendly protective materials.
Developing thin-film sensor networks integrated directly into the heat-shrink polymer matrix. This enables real-time sensing of moisture ingress, pressure deviations, and coating failure, transmiting status reports wirelessly.
R&D into fluid-like polymers that seal mechanical micro-punctures automatically. This system utilizes advanced rheological properties to flow back into damaged zones, maintaining barrier integrity without human intervention.
Phasing out halogenated flame retardants in favor of eco-friendly mineral-based alternatives. This aligns with global regulations, reducing toxicity during manufacture and high-temperature pipeline operations.
A look inside our primary compounding and extrusion spaces where high quality control is maintained.
Our facility operates under an ISO-certified quality management framework. By maintaining tight control over chemical formulation, polymer cross-linking density, and hot-melt application thicknesses, we deliver uniform product performance.
Each production run undergoes comprehensive batch testing. We evaluate dimensions, heat shrink recovery ratios, peel strength, shear resistance, and thermal aging. Raw material inspection protocols ensure that the chemical properties of our polyolefins and adhesives remain consistent from batch to batch.
This systematic control enables CYCT to manufacture high-performance field joint protection materials that reliably protect critical subsea and land pipelines.
CYCT's operations are validated by industry bodies, including AMPP, ISO, and state-level high-tech enterprise recognitions.
Member of Council in Chinese Society for Corrosion and Protection (CSCP) | Qualification Certificate of Corrosion Protection Construction | Qualification Certificate of Pipeline Detection | Corporate Member of China Association of Petroleum Engineering Construction (CAPEC) | State-Level High-Tech Enterprise
Detailed technical answers addressing common offshore pipeline and marine cable joint protection questions.
Marine-grade heat shrinkable materials are formulated with modified polymers designed to withstand environmental challenges like high salinity, UV degradation, biological growth, and mechanical forces. The backing is cross-linked using high-energy electron beams to provide strong mechanical properties, while the heavy-duty adhesive or mastic forms a moisture-tight barrier that prevents water ingress under high hydrostatic pressure.
We conduct cathodic disbondment testing (CDT) in our CNAS-accredited laboratory in compliance with international standards like ISO 21809-3 and ASTM G8. Coated samples are subjected to a constant electrical potential in a saline bath at set temperatures. The disbondment radius is measured to confirm the coating maintains adhesion and prevents under-film corrosion even when cathodic protection systems are active.
Viscoelastic tape (e.g., VT95) is a cold-applied, self-healing material that remains viscoelastic over long service lives. It is suited for complex geometries like valves, tees, and flanges, or where open flames are restricted. It requires minimal surface preparation (often St2/St3 is acceptable). For high-impact areas, pipeline field joints, and zones requiring high mechanical resistance, heat shrinkable sleeves are typically preferred due to their tough, cross-linked backing.
In a 3LPE system, the solvent-free liquid epoxy primer is applied directly to the cleaned steel surface (Sa 2.5). It provides chemical adhesion to the steel and offers primary protection against cathodic disbondment. The intermediate copolymer adhesive layer bonds the epoxy primer to the top polyolefin heat shrink sleeve, which provides mechanical protection and blocks moisture ingress.
Yes, we provide custom sizes. Through our manufacturing facility and R&D team, we customize parameters like length, width, thickness, and shrink ratios to match your project specifications. We also offer OEM and ODM services to adapt to regional requirements and project-specific parameters.
Explore our full line of hot-melt fillers, epoxy primers, wraparound sleeve field joint systems, bend restrictors, and photo-curing sleeves.
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