China China FRY Heat Shrinkable Tubular Sleeve - Anti-Corrosion Solution by Leading Suppliers and Factory Suppliers, Factories

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China China FRY Heat Shrinkable Tubular Sleeve - Anti-Corrosion Solution by Leading Suppliers and Factory Suppliers, Factories

Introducing the CYCT FRY heat-shrinkable tubular sleeve, an advanced anti-corrosion solution specifically designed for buried pipeline weld joints. As a leading product from China, our sleeves tackle the corrosion challenges faced by underground pipeline joints effectively. This innovative product is ideal for various applications, including buried oil and gas pipelines, municipal water supply and drainage systems, and industrial process pipelines. By utilizing our heat-shrinkable sleeves, you can significantly prolong the service life of your pipeline systems, protecting them from corrosion caused by soil moisture, microbial activity, and harmful underground chemicals. Trust the expertise of reliable suppliers and our experienced factory to provide optimal protection for your infrastructure

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Product Description

Product Introduction

A key advantage of the FRY heat-shrinkable tubular sleeve is its broad compatibility: it complies with mainly standard pipeline coatings (such as 2LPE, FBE, and mastic coatings) and outer jackets. It eliminates the risk of coating incompatibility and ensures the integrity of the entire pipeline anti-corrosion system, reducing maintenance costs for later repairs.

Three-Layer Structured Design

The FRY heat-shrinkable tubular sleeve adopts a scientific three-layer composite structure, each layer playing a critical role in enhancing anti-corrosion efficiency and durability:

Primer Layer — Solvent-Free Two-Component Liquid Epoxy

As the bottom anticorrosion layer, it features strong adhesion to bare steel and existing pipeline coatings. It forms a tight, chemical-resistant barrier to prevent the pipeline from corrosion.

Intermediate Layer — High Shear Strength Copolymer Adhesive

Its high shear strength ensures the tubular sleeve stays firmly attached to the pipeline and prevents corrosion even under soil pressure, pipeline thermal expansion, or minor ground movement.

Backing Layer — Radiation Cross-Linked Polyethylene

The outer backing offers high mechanical strength, impact resistance, and weather resistance. After heat shrinking, it forms a rigid, seamless protective shell that resists soil abrasion, root penetration, and external impacts—effectively shielding the weld joint from physical damage during backfilling and long-term operation.

Heat shrinkable tubular sleeve - three layer structure

Technical Data

No.	Property	Unit	Test Method	Typical Value
1	Max. Operating Temperature	—	—	50℃
PE Backing
2	Tensile Strength	MPa	ASTM D-638	24.6
3	Elongation	%	ASTM D-638	640
3	Hardness	Shore D	ASTM D-2240	45
4	Volume Resistivity	Ohm·cm	ASTM D 257	10×10¹⁷
5	Dielectric Strength	KV/mm	ASTM D-149	32.3
Adhesive
6	Softening Point	℃	ASTM E 28	94
7	Lap Shear @23℃	N/cm²	ISO 21809-3	90
Installed System
8	Peel Strength @23℃	N/cm	ISO 21809-3	56 N/cm
9	Impact Resistance	J	ASTM G-14	≥15 J
10	Indentation Resistance	—	ISO 21809-3	Pass
11	Cathodic Disbondment @23℃, 28 days	—	ISO 21809-3	13mm rad

Application

Oil & gas pipelines
Water pipelines
Compatible line coating: PE, FBE, Coal Tar

Specification (for Pipe OD < 159mm)

Product Size	Outer Diameter	Tubing Diameter	Inner Dia. After Shrink	Thickness Before Shrink
DN15×250	22	Φ30	15	1.5+0.3
DN15×300	22	Φ30	15	1.5+0.3
DN15×350	22	Φ30	15	1.5+0.3
DN15×450	22	Φ30	15	1.5+0.3
DN20×350	27	Φ40	20	1.5+0.3
DN20×450	27	Φ40	20	1.5+0.3
DN25×350	34	Φ50	25	1.5+0.3
DN25×450	34	Φ50	25	1.5+0.3
DN32~40×350	42/48、50	Φ60	30	1.5+0.3
DN32~40×450	42/48、50	Φ60	30	1.5+0.3
DN50×350	57、60	Φ80	40	1.5+0.3
DN50×450	57、60	Φ80	40	1.5+0.3
DN65×350	76	Φ90	45	1.5+0.3
DN65×450	76	Φ90	45	1.5+0.3
DN65×500	76	Φ90	45	1.5+0.3
DN80×350	89	Φ120	60	1.5+0.3
DN80×450	89	Φ120	60	1.5+0.3
DN80×500	89	Φ120	60	1.5+0.3
DN100×350	108、114	Φ160	80	1.5+0.3
DN100×500	108、114	Φ160	80	1.5+0.3

Specification (for Pipe OD ≥ 159mm)

Serial No.	Specification	Serial No.	Specification
1	FRYΦ159×500—1.2/1.0	10	FRYΦ508×500—1.5/1.0
2	FRYΦ168×500—1.2/1.0	11	FRYΦ529×500—1.5/1.0
3	FRYΦ219×500—1.2/1.0	12	FRYΦ610×500—1.5/1.0
4	FRYΦ273×500—1.2/1.0	13	FRYΦ711×500—1.5/1.0
5	FRYΦ325×500—1.2/1.0	14	FRYΦ813×500—1.5/1.0
6	FRYΦ355×500—1.2/1.0	15	FRYΦ914×500—1.5/1.0
7	FRYΦ406×500—1.5/1.0	16	FRYΦ1016×500—1.5/1.0
8	FRYΦ426×500—1.5/1.0	17	FRYΦ1219×500—1.5/1.0
9	FRYΦ457×500—1.5/1.0	18	FRYΦ1350×500—1.5/1.0

Product Size

FRY Heat Shrinkable Tubular Sleeve Size Chart

Frequently Asked Questions

What makes the FRY heat-shrinkable tubular sleeve compatible with different pipeline coatings?

The FRY sleeve is engineered to adhere to a wide range of standard pipeline coatings including 2LPE, FBE, and mastic coatings. Its solvent-free two-component liquid epoxy primer layer provides strong chemical bonding to both bare steel and existing coatings, ensuring seamless compatibility and eliminating the risk of coating incompatibility across the entire anti-corrosion system.

What is the role of each layer in the three-layer structure of the FRY sleeve?

The three layers serve distinct functions: (1) The Primer Layer (solvent-free epoxy) bonds tightly to the steel surface and resists chemical corrosion. (2) The Intermediate Layer (high shear strength copolymer adhesive) keeps the sleeve securely attached under soil pressure, thermal expansion, and ground movement. (3) The Backing Layer (radiation cross-linked PE) provides mechanical protection against abrasion, root penetration, and physical impact during backfilling and long-term operation.

What pipeline types and sizes is the FRY heat-shrinkable tubular sleeve suitable for?

The FRY sleeve is suitable for oil & gas pipelines and water pipelines. It is available in a comprehensive range of sizes covering pipe ODs from DN15 (22mm) up to Φ1350mm, making it applicable for small-diameter distribution lines as well as large-diameter transmission pipelines.

What is the maximum operating temperature of the FRY heat-shrinkable tubular sleeve?

The FRY heat-shrinkable tubular sleeve has a maximum operating temperature of 50℃. This makes it well-suited for buried pipeline applications in typical oil, gas, and water transmission environments where operating temperatures remain within this range.

How does the FRY sleeve perform in terms of peel strength and impact resistance?

According to ISO 21809-3 testing, the installed FRY sleeve achieves a peel strength of 56 N/cm at 23℃, indicating excellent long-term adhesion. Its impact resistance reaches ≥15 J per ASTM G-14, ensuring the sleeve can withstand mechanical stresses during backfilling and in-service conditions without cracking or delamination.

Can the FRY heat-shrinkable tubular sleeve be used with cathodic protection systems?

Yes. The FRY sleeve demonstrates excellent resistance to cathodic disbondment, with a test result of only 13mm radius after 28 days at 23℃ per ISO 21809-3. This confirms that the sleeve maintains strong adhesion even when used in conjunction with cathodic protection systems, ensuring long-term corrosion protection for pipeline weld joints.

Product Detail

China China FRY Heat Shrinkable Tubular Sleeve - Anti-Corrosion Solution by Leading Suppliers and Factory Suppliers, Factories

Product Description

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Product Detail

China China FRY Heat Shrinkable Tubular Sleeve - Anti-Corrosion Solution by Leading Suppliers and Factory Suppliers, Factories

Product Description

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