Explore our premium grade heat shrink sleeves, PE tapes, and corrosion barrier systems engineered for demanding industrial operations.
In the transportation of crude oil, natural gas, refined products, and municipal water, pipeline integrity is paramount. Corrosive soil environments, moisture intrusion, cathodic disbondment, and mechanical stresses during installation (especially in trenchless directional drilling) pose constant threats to bare steel pipes and joints. Wrap-around heat shrink tubing (or wrap-around sleeves) represents the pinnacle of field joint protection technology. Unlike standard tubular sleeves, wrap-around configurations feature an open architecture, allowing them to be installed directly over existing run piping without requiring the dismantling of jointed segments or inline hardware.
Our wrap-around sleeves utilize radiation cross-linked high-density polyethylene (HDPE) backings. By bombarding thermoplastic raw PE with high-energy electron beams, the molecular chains bond into a highly resilient three-dimensional matrix. This cross-linking process alters the polymer structure, giving it elastic memory: when heated, it shrinks tightly around the substrate, applying a uniform, continuous radial pressure that forces the internal hot-melt copolymer adhesive into every micro-cavity of the metal surface.
CYCT's pipeline field joint protection coatings comply with strict international standards, including ISO 21809-3, EN 12068, and various AMPP/NACE protocols. Below are the critical performance characteristics of our systems:
| Property Parameter | Standard Testing Protocol | Typical Performance Metric |
|---|---|---|
| Peel Strength (to Steel/Coating) | ISO 21809-3 / EN 12068 | > 80 N/cm at 23°C / > 20 N/cm at 60°C |
| Cathodic Disbondment Resistance | ASTM G42 / ISO 21809-3 | < 8 mm radius at 60°C (30 days) |
| Impact Resistance | EN 12068 Class C | > 15 Joules |
| Indentation Resistance | EN 12068 | > 0.6 mm residual thickness (10 N/mm²) |
| Elongation at Break | ASTM D638 | > 400% |
Our solutions cater to various challenging operating environments worldwide. In Horizontal Directional Drilling (HDD), pipelines are pulled through long underground boreholes, subjecting the field joint coatings to extreme shear and abrasion. CYCT’s high-performance fiberglass reinforced sleeves provide a rugged sacrificial outer layer, protecting the underlying corrosion barrier from rock scratches and soil drag. In 3LPE and 3LPP pipe systems, our field joint systems offer seamless fusion with factory-applied coatings, ensuring absolute barrier continuity across the entire pipeline length.
A premier manufacturer and state-level high-tech enterprise dedicated to pipeline protection material technologies.
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 integrated system. CYCT has devoted itself to the R&D, production, and sales of pipeline corrosion protection materials for decades.
CYCT owns leading testing and R&D capabilities, a professional R&D team, and a national CNAS-accredited laboratory. By partnering with leading R&D institutes such as the CNPC Pipeline Science Research Institute, CYCT is capable of providing in-service pipelines with varied technical services, including buried pipeline detection, design schemes, cathodic protection, rehabilitation projects, and integrated solutions for the safety protection of pipelines.
CYCT has been a stable supplier of field joint coatings for years to PetroChina, Sinopec, PipeChina, and local pipelines, capturing a significant market share. Furthermore, CYCT has successfully developed and introduced a number of specialty corrosion protection materials, such as visco-elastic anticorrosion materials, special photo-curing sleeves for HDD protection, and polyurea coatings.
Unlocking global delivery efficiency, raw material vertical integration, and stringent Quality Control processes.
We source raw chemical polymers and compounding additives directly from local refining clusters. This localized integration isolates production costs from global market shocks and ensures consistent batch quality.
Equipped with advanced multi-layer co-extrusion machinery and high-energy electron accelerators, we easily scale production to meet urgent demands for transcontinental transmission line contracts.
Every shipment undergoes rigorous testing in our national CNAS lab. We check peel strength, heat aging, elongation limits, and cathodic disbondment to guarantee compliance prior to port departure.
Procuring field joint coatings and cold applied PE tapes for major pipeline networks requires strict adherence to international safety and environment directives. At CYCT, we prioritize regulatory compliance across all target markets, ensuring our materials meet or exceed global standards:
Our research and development processes conform to ISO 21809-3 (Pipeline transportation systems for petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 3: Field joint coatings). We also produce coatings meeting EN 12068 standards for organic coatings used in cathodic protection systems, satisfying the highest mechanical classifications (Class C-50 and C-80).
Pipelines face vastly different conditions depending on geography. Coatings in desert environments must withstand elevated service temperatures (up to 80°C or 100°C for PP systems) without adhesive shear failure. Conversely, cold climate pipelines require excellent low-temperature flexibility to prevent cracking during winter handling and installation. We customize hot-melt adhesives and crosslink densities to match the specific operating temperature profiles and soil conditions of your project.
CYCT's advanced testing instruments ensure performance under varied environmental stresses.
Exploring the future of pipeline corrosion protection: intelligent coating systems, environmental compliance, and high-temperature polymers.
As deep well drilling recovers hotter oil and gas, pipelines operate at increasingly higher temperatures. Standard polyethylene-based heat shrinkable sleeves, historically limited to 60°C or 80°C operating environments, face potential degradation at these extremes. The industry is moving toward polypropylene (PP) field joint systems and specialized high-temperature copolymer adhesives. These materials maintain bond integrity and resist shear creep at continuous service temperatures up to 110°C and even 120°C.
Trenchless pipeline installation (Horizontal Directional Drilling) has grown popular due to its low environmental impact. However, pulling pipelines through rough rock formations often damages the primary corrosion coating. To address this, manufacturers have developed fiber-reinforced heat shrinkable sleeves. Incorporating a fiberglass matrix into the backing significantly increases the sleeve's mechanical resistance, enabling it to withstand heavy scraping forces during installation.
Get answers to common technical, installation, and procurement questions regarding wrap-around heat shrinkable sleeves.
Explore our manufacturing facility and verified quality certificates confirming compliance with global standards.
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Browse our specialty cold applied outer wraps, PP systems, and repair products designed for long-term corrosion prevention.
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