Introduction to Prefabricated Direct Buried Insulation Pipes?
Dacheng Xiangdong Insulation Refractory Material Factory | Phone: 13473696600 | 15731614448
Prefabricated direct buried insulation pipes are widely used in modern infrastructure for efficient heat or cold transfer. These pipes are designed to provide excellent thermal insulation, reducing energy loss and ensuring long-term performance. The Dacheng Xiangdong Insulation Refractory Material Factory specializes in manufacturing high-quality polyurethane insulation pipes that meet international standards.
Polyurethane Prefabricated Insulation Pipe
1. Introduction
Polyurethane insulation pipes are a type of thermal insulation system made using rigid polyurethane foam as the core insulating material. The basic structure typically includes an inner medium pipe, a middle layer of rigid polyurethane foam, and an outer protective layer. This combination ensures durability, efficiency, and resistance to environmental factors.
2. Classification
There are multiple ways to classify these pipes based on different criteria.
2.1 By Installation Method:
- Directly buried polyurethane insulation pipes
- Overhead polyurethane insulation pipes
2.2 By Medium Temperature:
- Normal temperature polyurethane insulation pipes
- High-temperature polyurethane insulation pipes
- Deep cold polyurethane insulation pipes
2.3 By Outer Sheath Material:
- FRP (Fiberglass Reinforced Plastic) outer sheath
- High-density polyethylene (HDPE) outer sheath
- Steel jacketed polyurethane pipes
2.4 By Medium Type:
- Water supply polyurethane insulation pipes
- High-temperature resistant polyurethane pipes
- Steam direct-buried polyurethane composite pipes
- Petroleum anti-corrosion insulated pipes
Other types include polyurethane buried pipes, prefabricated polyurethane pipes, direct-buried prefabricated polyurethane pipes, polyurethane jacket pipes, and foam-insulated polyurethane pipes.
3. Commonly Used Polyurethane Insulation Pipes
3.1 Central Heating and Return Water Polyurethane Insulation Pipes
These pipes are commonly used in heating systems and are composed of an outer sheath (usually HDPE or fiberglass), a rigid polyurethane foam insulation layer, and an inner steel pipe. Additional components like alarm lines, brackets, and composite insulation layers may be included depending on the application.
3.1.1 High-Density Polyethylene Outer Sheath Polyurethane Rigid Foam Prefabricated Insulation Pipe
- Reference Standards:
- European EN253
- Chinese Ministry of Construction CJ/T114-2000
- China National Petroleum Corporation SY/T0415-1996
- CJT_155-2001 for prefabricated direct buried insulation pipe fittings
Development Status of Insulation Pipes
Insulation pipes play a crucial role in energy conservation. Their development and application have gained increasing attention globally. Since the 1970s, many countries have focused on improving insulation technology to reduce energy consumption and environmental impact. In Europe and the U.S., polyurethane is the most widely used insulation material, accounting for nearly 50% of total usage. In China, however, its adoption is still less than 20%, indicating significant growth potential.
Applications of Insulation Pipes
These pipes are suitable for transporting media within a temperature range of -50°C to 150°C. They are widely used in central heating, cooling, hot oil transportation, and insulation projects in buildings, cold storage facilities, coal mines, and the petrochemical industry.
For more information about polyurethane insulation pipes and their applications, visit:
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