Welcome to our website！
Radiation Cross-linked Polyethylene Fiber Reinforced Heat Shrinkable Tape
Product Highlights
Product Description
Radiation Cross-Linked Polyethylene Fiber-Reinforced Heat Shrinkable Tape is a high-strength anti-corrosion sealing material specifically designed for pipeline field joint coating. The backing features a 3-layer structure: polyethylene outer layer + reinforcing fiber middle layer + polyethylene inner layer, delivering significantly higher mechanical performance than standard heat shrinkable tapes. The inner surface is coated with a specialized hot-melt adhesive, and the system requires a solvent-free epoxy primer for installation.
With a total thickness of ≥3.0mm, this tape offers exceptional impact resistance, durable sealing performance, fast installation, aging resistance, and long service life. It is specifically engineered for direct burial applications in long-distance pipeline projects. The product complies with DEC-OTP-S-AC-010-2021-2 technical standard.
Recommended Applications
- Field joint coating for long-distance oil and gas transmission pipelines
- Weld seam corrosion protection for city gas pipelines
- Heat distribution pipeline joint coating
- Chemical pipeline weld protection
- High-mechanical-demand pipeline sections (rocky terrain, road crossings, directional drilling)
- Direct burial pipeline applications requiring superior impact resistance
System Composition
The fiber-reinforced heat shrinkable tape is used as the primary anti-corrosion layer for pipeline field joints. For optimal performance, it must be applied over a solvent-free epoxy primer.
- Solvent-Free Epoxy Primer (JY-308): Applied to the prepared weld area to enhance adhesion and provide additional corrosion protection to the steel substrate.
- Fiber-Reinforced Heat Shrinkable Tape (JY-307): Wrapped around the primed weld area and heated to shrink tightly, forming a high-strength, impact-resistant anti-corrosion seal.
Performance Index
| Tensile Strength (MPa) | ≥24 |
| Nominal Fracture Strain (%) | ≥400 |
| Vicat Softening Point (°C) | ≥100 |
| Brittleness Temperature (°C) | ≤-65 |
| Volume Resistivity (Ω·m) | ≥1×10¹³ |
| Environmental Stress Cracking Resistance (h) | ≥1000 |
| Adhesive Softening Point (°C) | ≥110 |
| Lap Shear Strength (23°C) (MPa) | ≥1.0 |
| Peel Strength to Steel (23°C) (N/cm) | ≥50 |
| Peel Strength to PE (23°C) (N/cm) | ≥50 (cohesive failure) |
| Cathodic Disbondment (65°C, 48h) (mm) | ≤5 |
| Impact Strength (J) | ≥20 |
| Burst Strength (N) | ≥2000 |
| Shrinkage Ratio (Circumferential) (%) | ≥15 |
Installation Guide & Precautions
Installation Methods
The fiber-reinforced heat shrinkable tape is applied using a propane torch or heat gun. Due to its thicker, fiber-reinforced construction, more careful heating is required to ensure complete shrinkage without damaging the material.
Quick Installation Steps
- Surface preparation: Clean and blast the weld area to Sa2.5. Grind smooth any weld irregularities, sharp edges, or protrusions.
- Pipe preheating: Preheat the pipe around the weld to 75°C-85°C (or as specified by the primer manufacturer).
- Primer application: Apply solvent-free epoxy primer evenly to the prepared weld area. Ensure full coverage without missing spots.
- Position the tape: Wrap the tape around the primed weld area with a minimum 100mm overlap at the lap joint.
- Install fixing strip: Secure the overlap seam with the provided fixing strip.
- Heat shrinking: Using a propane torch, heat the tape evenly from the center outward. Due to the thicker construction, maintain a steady, moderate heat to allow full shrinkage without burning. Shrink until the adhesive flows out slightly at both ends.
- Final inspection: Check for smooth coverage, no bubbles, wrinkles, or lifted edges. Ensure the tape is fully adhered to the pipe and to the adjacent pipe coating.
Key Reminders
- Do not overheat — excessive heat can burn the polyethylene layer or damage the fiber reinforcement. Keep the torch moving at all times.
- Shrink from the center — this prevents air entrapment and ensures a smooth, bubble-free finish.
- Overlap is critical — a minimum 100mm overlap is essential for sealing integrity.
- Primer must be applied — the fiber-reinforced tape requires a primer for proper adhesion to steel.
- Heavier construction requires more heat — allow adequate time for the thicker material to shrink fully.
- Ideal for high mechanical demand areas — rocky terrain, road crossings, and directional drilling applications.
- Storage: Keep in original packaging in a dry, cool area below 35°C, away from direct sunlight and heat sources.
