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.
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