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Home > Hot Products > OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
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OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers
OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers

OEM China FRPD-PP Heat Shrinkable Sleeves Supplier for Factory Coated Polypropylene Pipe Joints and Fittings Manufacturers, Suppliers

Introducing the CYG Changtong FRPD-PP heat shrink sleeve, expertly engineered for optimal performance in field joints. This product is specifically designed for seamless connections between sections of linepipe that have been pre-coated at the factory with a robust three-layer polypropylene coating system, in addition to pipe bends and fittings also coated with polypropylene. As a leading supplier in China, our factory ensures the highest quality standards for our heat shrink sleeves, providing reliable solutions for your pipeline needs. Trust in CYG Changtong for superior durability and performance in your projects
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Product Description

Construction

Polypropylene heat shrink field joint coatings enjoys very good compatibility with the plant applied three-layer polypropylene coated linepipe.
Structure:
The PP heat shrinkable sleeve is consist of irradiation cross-linked and stretched polypropylene backing and modified high shear strength polypropylene adhesive. It formed into pre-cut wrap around sleeve with a separate closure system, and applied on 2-component solvent-free liquid epoxy primer.
The Backing consists of a cross-linked and stretched polypropylene backing which is designed to partially or fully recover with heat from a touch during application. The backing also provides resistance against mechanical damage and UV resistance during construction and in service.

Features

The modified polypropylene adhesive with perfect adhesion to the epoxy primer, the PP backing and the factory applied 3LPP coatings.
polypropylene heat shrinkable sleeves 1
polypropylene heat shrinkable sleeves 2
polypropylene heat shrinkable sleeves 3
polypropylene heat shrinkable sleeves 4
The initial layer consists of a compatible liquid epoxy primer as the primary corrosion protection layer. The liquid epoxy primer is a kind of solvent free epoxy coating and formulated to be compatible with the polypropylene sleeve adhesive.
The 3LPP HSS forms the same three layer structure as the factory-applied coating 3LPP coating. With excellent resistance to corrosion, the FRDP-PP heat shrinkable sleeve not only meeting the requirements of ISO/DIS 21809 - 3：Petroleum and Natural Gas Industries — External Coatings for Buried or Submerged Pipelines used in Pipeline Transportation Systems — Part 3: Field Joint Coatings, but exceeding it.
The final coating system is suitable for the protection from external corrosion of buried field joints operating at temperatures up to a maximum of 110°C. With excellent anti-corrosion performance and compatibility with the pipeline plant applied three-layer polypropylene coated, the weld joint polypropylene Heat Shrink Sleeves (HSS) suitable for Pipelines that will operate in buried service from ambient temperature to 110°C for a 30 year design life.

Technical Performance

Item Test temperature Unit Result Test method
PP backing
Tensile strength 23℃ MPa ≥30 ASTM D638
Elongation 23℃ % ≥550 ASTM D638
Hardness 23℃ Shore D ≥61 ASTM D2240
Water absorption, 24h 23℃ % ≤0.1 ASTM D570
Volume resistance —— Ω.cm ≥2*10^16 ASTM D257
Low temperature brittleness -40℃ —— pass ASTM D746
Dielectric strength —— KV/mm ≥25 ASTM D-149
Adhesive
Melt point —— ℃ 154 ASTM D3418
Lap shear strength 23℃ MPa 5.5 ISO21809-3
110℃ MPa 0.35 ISO21809-3
Low temperature brittleness -40℃ —— pass ASTM D746
Ring-and-ball softening point —— ℃ ≥150℃ GB/T 4507
Item Test temperature Unit Result Test method
Installed sleeve
Highest design temperature —— ℃ 100 ——
Thickness —— mm backing≥1.0 adhesive≥1.5 ISO21809-3 Appendix A
Cathodic disbandment, 28d 23℃ mm 7.0 ISO21809-3
95℃ mm 15.0
Peeling strength (10mm/min) To steel with primer 23℃ N/mm 9.8 ISO21809-3 Appendix D
110℃ 2.4
To coating layer 23℃ 6.4
110℃ 1.4
28d, Tmax, peeling strength after hot water soaking (10mm/min) To steel with primer 23℃ N/mm 8.5 ISO21809-3 Appendix I
To coating layer 5.5

Specification

Serial No. Specification Serial No. Specification
1 FRDPΦ168×500—1.2/1.0 7 FRDPΦ508×500—1.5/1.0
2 FRDPΦ219×500—1.2/1.0 8 FRDPΦ529×500—1.5/1.0
3 FRDPΦ273×500—1.2/1.0 9 FRDPΦ610×500—1.5/1.0
4 FRDPΦ325×500—1.2/1.0 10 FRDPΦ711×500—1.5/1.0
5 FRDPΦ355×500—1.2/1.0 11 FRDPΦ813×500—1.5/1.0
6 FRDPΦ426×500—1.5/1.0 12 FRDPΦ1220×500—1.5/1.0
polypropylene heat shrinkable sleeves spec 1
polypropylene heat shrinkable sleeves spec 2
polypropylene heat shrinkable sleeves spec 3

☑ Closure patch length and thickness are equal to sleeve axial length and thickness, respectively. Enclosure patch width: 120 mm for sleeves Φ168 ～Φ426 while 150 mm for sleeves > Φ426.

☑ Custom-made is available to meet any customer special demand.

Product Size

Product size diagram

Frequently Asked Questions

What is the maximum operating temperature for polypropylene heat shrinkable sleeves?
The polypropylene heat shrinkable sleeves are designed for field joints operating at temperatures up to a maximum of 110°C, suitable for buried service with a 30-year design life.
What standards do these heat shrink sleeves comply with?
The FRDP-PP heat shrinkable sleeves meet and exceed the requirements of ISO/DIS 21809-3: Petroleum and Natural Gas Industries — External Coatings for Buried or Submerged Pipelines used in Pipeline Transportation Systems — Part 3: Field Joint Coatings.
What is the structure of the PP heat shrinkable sleeve?
The sleeve consists of irradiation cross-linked and stretched polypropylene backing with modified high shear strength polypropylene adhesive. It is formed into a pre-cut wrap-around sleeve with a separate closure system and applied on 2-component solvent-free liquid epoxy primer.
Can the sleeves be customized for specific requirements?
Yes, custom-made sleeves are available to meet any customer special demand. Standard specifications range from Φ168 to Φ1220, but other sizes can be manufactured upon request.
What is the minimum thickness of the backing and adhesive layers?
According to ISO21809-3 Appendix A, the minimum thickness is backing ≥1.0mm and adhesive ≥1.5mm for the installed sleeve system.
What are the key advantages of using these polypropylene heat shrink sleeves?
The sleeves offer excellent compatibility with factory-applied 3LPP coatings, superior corrosion resistance, UV protection, mechanical damage resistance, and excellent adhesion properties. They form the same three-layer structure as factory-applied coatings, ensuring long-term protection for buried pipelines.

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