China High Temperature Shrink Tubing Manufacturers & Factories

Engineered Polymer Technologies & Heavy-Duty Pipeline Anticorrosion Solutions for Extreme Thermal Environments

About The Enterprise

CYCT · Founded in 2000

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 unified ecosystem.

CYCT has devoted itself to the R&D, production, and sales of high-reliability pipeline corrosion protection materials for over two decades. Over years of hard work, CYCT has become a stable supplier of field joint coatings for PetroChina, Sinopec, PipeChina, and various municipal network operators, holding a dominant market position.

Our company possesses leading testing and R&D capabilities, an elite technical team, and a national CNAS-accredited laboratory. We have successfully designed, developed, and deployed specialty protection formulations, including visco-elastic anticorrosion materials, special photo-curing sleeves for Horizontal Directional Drilling (HDD), and durable polyurea structures.

"By maintaining good cooperation with leading R&D institutions such as the CNPC Pipeline Science Research Institute, CYCT is capable of providing in-service pipelines with varied technical services like buried pipeline detection, design schemes, cathodic protection, rehabilitation projects, and integrated security systems."
CYCT Facility View 1
CYCT Manufacturing Facility
CYCT Advanced Laboratory
CYCT Testing Instrument
CNAS Laboratory Testing
R&D Equipment
Pipeline Protection Materials
2000
Founded Year
24+
Years Industry Experience
CNAS
Accredited Laboratory
10+
Proprietary Patents
Material Science

Polymer Chemistry & Shrink Mechanisms

How radiation crosslinking and specialized comonomer selection enable continuous operation at elevated temperatures.

Radiation Cross-linking

High-energy electron beam radiation creates a robust three-dimensional network structure in polyethylene and polypropylene matrices. This molecular modification prevents polymer chains from sliding past each other above their melting points, giving the material true shape memory properties and dimensional stability.

PET Thermal Durability

Polyethylene Terephthalate (PET) is optimized for its thermal characteristics, outstanding dielectric strength, and chemical inertness. CYCT's PET Heat Shrink Tubing is engineered for critical environments where space optimization, electrical insulation, and performance up to 150°C are key requirements.

Advanced Hot Melt Systems

Our proprietary FRDX fillers and PP-based hot melt sticks offer excellent chemical adhesion to factory-applied 3LPE/3LPP coatings. The formulation forms a barrier against water vapor, oxygen, and corrosive ions, ensuring robust cathodic disbondment resistance.

Material Classification Continuous Operating Temp Dielectric Strength Shrink Ratio Range Key Applications
Crosslinked PE (XLPE) -55°C to +125°C ≥ 20 kV/mm 2:1 to 4:1 Standard pipeline field joints, utility insulation, environmental sealing.
Crosslinked PP (XLPP) -40°C to +150°C ≥ 22 kV/mm 2:1 to 3:1 High-temperature oil and gas transmission pipelines (3LPP system repair).
Polyester (PET) -55°C to +150°C ≥ 25 kV/mm 1.5:1 to 2:1 Battery cell packaging, capacitors, high-density electrical busbar protection.
Fiberglass Reinforced Sleeve -40°C to +120°C N/A (Mechanical Focus) Customized Wrap HDD (Horizontal Directional Drilling) pull-back protection, rocky soils.
Industry Verticals

Macro Engineering Solutions

How CYCT protection materials secure key global infrastructure assets across multiple industries.

Oil & Gas Transmission

High-pressure cross-country pipeline networks operate at elevated temperatures due to gas compression and heavy crude flow dynamics. CYCT's PP heat shrinkable sleeves and outer wrapping systems provide long-term corrosion prevention, protecting field joints and mainlines from degradation.

Horizontal Directional Drilling (HDD)

During pipeline installation via trenchless HDD, the coating is subjected to severe shear and abrasive forces from soil and rock. Our fiberglass-reinforced sleeves act as a tough outer layer, shielding the primary corrosion coating from mechanical damage.

Urban Gas & Water Pipelines

For local utility gas lines and district heating networks, CYCT delivers cost-effective and easy-to-install solutions, including polypropylene fiber bitumen tapes, viscoelastic tapes, and cold-applied outer wraps that resist moisture and biological degradation.

Technical Authority

Honor & Industry Associations

CYCT's technical qualifications and research capabilities are backed by academic partnerships and official industry certifications.

Distinguished Industry Engagements: Member of the Council in the Chinese Society for Corrosion and Protection (CSCP), Corporate Member of the China Association of Petroleum Engineering Construction (CAPEC), and active participant in AMPP (Association for Materials Protection and Performance). Qualification certificates cover corrosion protection construction, underground pipeline detection, and advanced chemical materials manufacturing.
Company Certificate 1

Innovative SME Award

Company Certificate 2

High-Tech Enterprise

Company Certificate 3

ISO 9001 Certification

Company Certificate 4

ISO 14001 Quality System

Company Certificate 5

OHSAS 18001 Health & Safety

Future & Efficiency

China Factory 4.0: Supply Chain & R&D Roadmap

Combining manufacturing automation with specialized polymer compounding to deliver consistent quality and shipping resilience.

Smart Compounding & Extrusion

CYCT's production floor utilizes closed-loop automated gravimetric feeding systems. This setup controls compound ratios down to ±0.2%, ensuring consistent heat stabilizers, antioxidants, and cross-linking agents are distributed evenly throughout the matrix.

Radiation & Expansion Chamber

Our expansion processes are monitored with real-time laser diameter tracking. By regulating hot-oil temperature and expansion ratios, we minimize internal stresses, providing predictable longitudinal shrink behavior (less than 5%).

R&D: Shape Memory Alloys

Our R&D pipeline is currently testing hybrid viscoelastic outer wraps and smart polymer matrix structures that respond dynamically to local heat loads, targeting self-healing and self-tensioning pipeline joints.

Global Delivery

Standards Compliance & Global Procurement

Ensuring field performance matches the technical specifications in global tender documents.

ASTM, ISO, & EN Compliance

CYCT pipeline materials are designed to comply with ISO 21809-3, EN 12068, and ASTM D638. These standards dictate required values for elongation at break, impact resistance, thermal aging, and peel strength.

Strict QC via CNAS Laboratory

Our in-house CNAS laboratory performs systematic batch testing for critical parameters. This includes cathodic disbondment tests at 60°C/80°C, high-temperature lap shear strength evaluations, and long-term hot water immersion testing.

Integrated Supply Logistics

With container loading systems near main ports, CYCT handles high-volume ocean freight logistics. Each shipment comes with a Certificate of Analysis (CoA) and a traceability barcode linking to raw material batches.

FAQ

Technical Support & FAQ

Answers to common engineering questions regarding the application and evaluation of high-temperature shrinkable sleeves and outer wraps.

What defines a true "high-temperature" shrink tubing/sleeve for industrial pipelines?
For pipeline corrosion prevention, a standard polyolefin sleeve is typically rated up to 60°C. A high-temperature system (such as CYCT's PP heat shrinkable sleeves or specialty cold-applied tapes) is formulated using cross-linked polypropylene (XLPP) and engineered hot-melt adhesives, enabling continuous performance in environments from 80°C up to 150°C.
How does the CNAS laboratory certification verify product quality?
CNAS (China National Accreditation Service for Conformity Assessment) is a signatory to the ILAC Mutual Recognition Arrangement (MRA). Test reports from our CNAS lab are recognized globally, confirming that our materials have been evaluated for performance metrics, including peel strength, cathodic disbondment, and hot water aging.
Why is fiberglass reinforcement used in heat shrinkable sleeves for Horizontal Directional Drilling (HDD)?
HDD involves pulling pipelines through pre-drilled boreholes containing stones and abrasive soils. Standard polymer sleeves can tear during pull-back. A fiberglass-reinforced sleeve adds mechanical strength and shear resistance to protect the underlying primary corrosion protection coating.
What is the shelf life and correct storage condition for heat shrinkable pipeline materials?
To prevent premature recovery, materials should be stored in ventilated warehouses below 35°C, away from direct sunlight, open flames, and heat sources. When stored under these conditions, CYCT's heat-shrinkable products have a shelf life of up to two years from the manufacturing date.
Can viscoelastic tapes be used on high-temperature operational pipelines?
Yes, our High-Performance VT95 Viscoelastic Tape is designed to remain stable and adhere to substrates without cracking or flowing under high temperature cycles. It is commonly used for complex fittings, valves, flanges, and pipeline repairs.