Heat Shrink Sleeve Radiation Cross Linked Polyethylene Hollow Wall Winding Tube

Heat Shrink Sleeve Radiation Cross-Linked Polyethylene Hollow Wall Winding Tube

Heat shrinkable sleeves/bands are designed for insulating pipe joints, including those of oil pipelines, gas pipelines, and water pipelines, under field conditions. These are dual-layer insulating materials composed of a radiation cross-linked polyethylene substrate and a hot melt adhesive. Additionally, there are reinforced three-layer heat shrinkable sleeves with an internal fiberglass mesh, offering enhanced tear resistance and shrinkage performance. When used in combination with a two-component liquid epoxy primer, a three-layer corrosion protection system similar to the pipe mill coating-specifically, the Super Strong (ВУС) insulation layer-can be formed. Heat shrinkable sleeves are available in roll form, fixed lengths, or ring shapes.

In the realms of modern industrial development and infrastructure construction, pipeline systems are constantly confronted with a myriad of complex environmental challenges, including corrosion, mechanical damage, and adverse climatic conditions. To safeguard the safe operation and long-term stability of pipelines, radiation polyethylene heat shrink sleeves have emerged as a crucial solution in the field of pipeline protection.

1. Product Introduction
Radiation polyethylene heat shrink sleeves represent a high-performance material engineered for pipeline protection. Utilizing radiation cross-linked polyethylene as the base material, these sleeves are crafted through a specialized production process to deliver exceptional physical and chemical properties. Characterized by high strength, high toughness, corrosion resistance, and aging resistance, this material effectively shields pipelines from external environmental erosion and damage.
2. Application Scenarios
(I) Oil and Gas Pipelines

Oil and gas pipelines serve as the vital arteries for energy transportation, where safety and reliability are of paramount importance. Radiation polyethylene heat shrink sleeves are extensively utilized in anti-corrosion, insulation, and repair projects for oil and gas pipelines. During pipeline installation, these sleeves provide a robust seal for joints, elbows, tees, and other critical components, preventing corrosive elements such as moisture and oxygen from contacting the pipeline. This significantly extends the pipeline's service life. Moreover, in day-to-day pipeline operations, the sleeves offer resilience against external forces like soil stress and mechanical vibrations, safeguarding the pipeline from potential damage.

(II) Municipal Water Supply and Drainage Pipelines

Municipal water supply and drainage pipelines form an integral part of urban infrastructure, with their operational conditions directly impacting the quality of life for urban residents and overall environmental sanitation. Radiation polyethylene heat shrink sleeves are employed for the repair and protection of these pipelines. For instance, in cases of partial damage or leakage, the sleeves can swiftly repair the affected areas, restoring the pipeline's sealing and integrity. Additionally, in the corrosion prevention of drainage pipelines, these sleeves effectively counteract the corrosive effects of acids and alkalis present in wastewater, thereby enhancing the pipeline's corrosion resistance.

(III) Chemical Pipelines

Chemical pipelines often transport highly corrosive, flammable, and explosive substances, necessitating stringent pipeline protection measures. Radiation polyethylene heat shrink sleeves play a vital role in safeguarding chemical pipelines, thanks to their outstanding chemical corrosion resistance. They can withstand the erosive effects of various chemical media, including acids, alkalis, and salt solutions, forming a reliable protective barrier. Moreover, the sleeves' excellent insulation properties help prevent electrochemical corrosion during the transportation process, ensuring the safe operation of chemical pipelines.

(IV) Marine Engineering Pipelines

The marine environment poses an extreme corrosion threat to pipelines, with factors such as salt, microorganisms, and wave impact in seawater causing significant damage. Radiation polyethylene heat shrink sleeves exhibit remarkable resistance to seawater corrosion and marine biological adhesion, making them ideal for protecting marine engineering pipelines. They can serve as the outer anti-corrosion layer for submarine pipelines, shielding them from seawater erosion and biological fouling, and ensuring the long-term stable operation of these pipelines. Additionally, in offshore platform pipeline systems, these sleeves effectively withstand the harsh marine conditions, guaranteeing the safe use of pipelines.
3. Product Advantages
(I) Excellent Anti-Corrosion Performance

Through the radiation cross-linking process, stable chemical bonds are formed between polyethylene molecular chains, significantly enhancing the material's resistance to chemical corrosion. This allows the sleeves to withstand the erosive effects of a wide range of corrosive media, such as acids, alkalis, salts, and oils. By effectively preventing pipeline corrosion and rusting, the sleeves extend the service life of pipelines.

(II) High Strength and High Toughness

The material boasts high strength and toughness, enabling it to endure significant external impacts and mechanical stress. During pipeline installation and operation, the sleeves can effectively resist external forces like soil pressure, mechanical vibrations, and geological settlement. This protects the pipeline from damage and ensures its structural stability.

(III) Good Sealing Performance

During the heating and shrinking process, the sleeves conform tightly to the pipeline surface, creating a robust sealing layer. This effectively prevents the ingress of moisture, air, and corrosive gases into the pipeline, ensuring its sealing and integrity. Additionally, the sleeves possess a certain self-healing capability. When minor scratches or damage occur on the pipeline surface, the sleeves can automatically fill the gaps and restore their sealing function.

(IV) Convenient Construction

The construction process for radiation polyethylene heat shrink sleeves is straightforward and efficient, requiring no complex equipment or tools. Simply place the sleeve over the pipeline, apply heat using a spray gun or hot air gun, and allow it to shrink and adhere tightly to the surface. This method not only saves time and labor costs but also enables rapid on-site repair of damaged pipeline sections, thereby enhancing construction efficiency.

(V) Environmentally Friendly and Pollution-Free

During both production and use, this product generates no harmful substances and poses no threat to the environment. It meets stringent environmental protection standards and qualifies as a green, environmentally friendly pipeline protection material. It is particularly suitable for applications where high environmental standards are required.

Heat shrinkable sleeve-HSSC-1 Detailed Photos

The HSSC-1 heat shrinkable sleeve, a two-layered product developed and manufactured by Qingdao Huashida Machinery Co., Ltd., is specifically designed for pipeline anti-corrosion. It consists of a radiation cross-linked polyethylene backing and a high shearing strength melt adhesive, and it possesses shape memory capabilities. Upon heating, the hot melt adhesive is forced into the joint by the shrinkage power, creating a perfectly sealed surface. The HSSC-1 is compatible with standard pipe coatings and can also be applied to bare pipes, replacement pipe sections, and large radius bends. This system is designed to require minimal preheating and is particularly suitable for large diameter wastewater pipes.

Our Advantages Fast shrinkage speed, good waterproof performance, good anti-corrosive performance, long service life, convenient transportation and fast construction. The product are ideal material for corrosion prevention and insulation.

Application scope
It's mainly used for heat pipe network, steel pipe corrosion resistance and insulation, chemical pipes and sewage pipes etc.

Heat Shrinking Wrapx
Selecting the proper sleeve:
Project specifications and local standards must be considered when specifying a shrinkable sleeve.
Next to these the following parameters must be considered for selecting the proper shrinkable sleeve:

Pipe Coating Type:
F. I. Bitumen, Coal Tar Enamel (CTE), Cold Applied Tapes (CAT), Fusion Bonded Epoxy (FBE), PolyEthylene (PE), PolyPropylene (PP), ...

Pipe Operating Temperature:
0 - 120° C (0-248° F)
Pipe Operating Pressure:
F. I. 100 mbar = 1, 42 psi, >4 bar = 56.88 psi, ...

Pipe Medium:
F. I. Gas, water, oil, ...

Pipe Diameter:
F. I. 1" or DN25 for steel pipe, 160 mm jacket diameter for insulated steel pipe, ...

Pipe Preparation:
Surface cleaning: F. I. Abrading, brushing, gritblasting obtainable preheat temperature: Low (60-70° C) (140-158° F), high (80-100° C)(176-212° F), very high (230° C) (446° F)
Adverse Soil Conditions:
Stable: Low soil stresses unstable: Shifting soil conditions, significant pipe motion relative to soil
Mechanical Resistance Heatshrinkable Coating:
Medium (B): Moderate impact and penetration resistance high (C): High impact and penetration resistance

Pipe Laying Method:
F. I...Open Trench, Directional Drilling, Off-Shore Climate conditions (Ambient Temperature during Sleeve Application):
Sea climate: Not very cold - not very warm
Land climate: Very cold - warm
Desert climate: Very cold - hot
All of the above parameters affect the type of coating which will provide the best performance, ease of installation and value. The following selection tables will help you to decide which sleeve is right for your application.

Used for pipe welding joint insulation, gas pipeline, oil pipeline, water supply pipeline insulation, heating pipeline sealing, and heat shrink tubing for connecting plastic pipes. Working temperature: up to 90ºC. Applicable coatings: polyethylene (PE), polypropylene (PP), high-density polypropylene (HPPC), fused bonded epoxy powder (FBE), steel.