SICHUAN FOREVER RADIATION TECHNOLOGY CO.,LTD
Heat Shrinkable Sleeves For Pipeline Joint Coating
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Heat Shrink Sleeves for Field Joint Coating in Pipelines: Materials and Description
Heat shrink sleeves are specialized materials used for field joint coating in pipelines. They provide protection against corrosion, mechanical damage, and environmental factors, ensuring the integrity and longevity of pipeline systems. These sleeves are widely used in oil and gas pipelines, water pipelines, and other industrial piping systems.
Heat shrink sleeves are applied to the field joints of pipelines as a seamless, durable barrier that restores the pipeline's corrosion protection in the joint area.
Structure:
Heat shrink sleeves typically consist of:
Backing Layer: A cross-linked polyethylene (PE) or polypropylene (PP) material that provides mechanical strength and resistance to environmental factors.
Adhesive Layer: A heat-activated adhesive (e.g., mastic or hot-melt adhesive) that bonds with the pipe surface and the factory-applied coating.
Application Process:
The sleeve is wrapped around the field joint.
Heat is applied using a propane torch or an induction heater, causing the sleeve to shrink tightly around the joint.
The adhesive melts and bonds to the pipe surface, creating a watertight and corrosion-proof seal.
Key Features:
Excellent corrosion resistance.
High mechanical strength and flexibility.
Long-term resistance to environmental factors like UV radiation, chemicals, and temperature variations.
Easy and quick installation in the field.
Technical data for 3LPE heat shrink sleeve HT 80
| Sr. No. | Property | Test Standard | Minimum Required Values |
| 1 | Visual inspection for surface irregularities | ISO 21809-3 | No defect |
| 2 | Pull off adhesion strength of epoxy to steel at 23ºC | ASTM D4541 | ≥15 MPa |
| 3 | Thickness | ISO 21809-3 | 3 mm minimum |
| 4 | Holiday Detection | ISO 21809-3 | No defect at 5kV/mm+5Kv |
5 | Peel Strength at 10 mm/min to pipe surface and to 3 LPE Coating |
ISO 21809-3 | ≥ 5 N/mm at 23℃ ≥ 0.3 N /mm at 80℃ |
6 | Peel Strength to pipe surface and to 3 LPE coating after 100 days hot water immersion at 80℃ |
ISO 21809-3 |
P100/P0 ≥ 0.75 at 23℃ |
| 7 | Impact resistance | ISO 21809-3 | No defect at 5kV/mm+5kV |
| 8 | Indentation resistance at 80 ℃ | ISO 21809-3 | Residual thickness ≥ 0.6 mm |
9 | Cathodic Disbondment at 28 days |
ISO 21809-3 | ≤5mm at 23ºC ≤10mm 80 ºC |
| 10 | Elongation at break | ISO 21809-3 | Greater than 250% |
11 | Lap Shear Strength at 10mm/min |
ISO 21809-3 | ≥3N/mm2 at 23℃ ≥0.2N/mm2 at 80℃ |
12 | Thermal Ageing, 100 days at 100 ℃ | ISO 21809-3 | ≥ 0.75 ≥ 0.75 |
Product Packaging:
The Field Joint Coatings - Shrinkable materials product comes in a sturdy cardboard box to ensure safe transportation and storage. The box includes 20 shrinkable sleeves that are individually packed in plastic bags for added protection. The box is labeled with the product name, size, and quantity for easy identification.
Shipping:
The Field Joint Coatings - Shrinkable materials product is shipped via standard ground shipping. The product is carefully packed in a corrugated cardboard box with cushioning material to prevent damage during transit. We ship to all locations within the United States and internationally. Shipping costs may vary depending on the destination and quantity ordered.
