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 thermal management. These pipes are designed to provide excellent insulation while being installed directly underground, reducing the need for additional support structures and minimizing heat loss. The Dacheng Xiangdong Insulation Refractory Material Factory specializes in producing high-quality polyurethane insulation pipes that meet international standards and are suitable for a variety of industrial applications.
Polyurethane Prefabricated Insulation Pipe
1. Introduction
Polyurethane insulation pipes are a type of thermal insulation system that uses rigid polyurethane foam as the core insulating material. This structure typically consists of an inner medium pipe, a middle layer of rigid polyurethane foam, and an outer protective layer. The combination ensures excellent thermal resistance, durability, and moisture protection, making it ideal for underground installation.
2. Classification
There are several ways to classify these pipes based on their application, materials, and design.
2.1 By Installation Method:
- Directly buried polyurethane insulation pipes
- Overhead polyurethane insulation pipes
2.2 By Medium Temperature:
- Normal temperature insulation pipes
- High-temperature insulation pipes
- Deep cold insulation pipes
2.3 By Outer Sheath Material:
- FRP (Fiberglass Reinforced Plastic) sheathed pipes
- High-density polyethylene (HDPE) sheathed pipes
- Steel-jacketed pipes
2.4 By Media Type:
- Water supply insulation pipes
- Steam-insulated pipes
- Oil and gas transportation pipes
- Anti-corrosion insulated pipes
Other common types include polyurethane buried pipes, prefabricated polyurethane pipes, and polyurethane foam insulation pipes.
3. Common Types of Polyurethane Insulation Pipes
3.1 Central Heating and Return Water Insulation Pipes
These pipes are commonly used in heating systems and consist of an inner steel pipe, a rigid polyurethane foam insulation layer, and an outer protective sheath made of HDPE or fiberglass. Additional features such as alarm lines, brackets, and composite layers can be included depending on the project requirements.
3.1.1 HDPE Sheathed Polyurethane Rigid Foam Prefabricated Insulation Pipe
- Standards followed: EN253, CJ/T114-2000, SY/T0415-1996, CJT_155-2001
Development of Insulation Pipes
Insulation pipes play a crucial role in energy efficiency and environmental protection. Since the 1970s, many countries have focused on developing and applying insulation technologies to reduce energy consumption and minimize pollution. In developed countries like the U.S. and Europe, polyurethane is the most widely used insulation material, accounting for nearly 50% of total usage. In China, however, this figure is still below 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 extensively used in central heating systems, cooling networks, hot oil pipelines, and in industries such as cold storage, coal mining, and petrochemicals. Their versatility makes them an essential component in modern infrastructure.
For more information about prefabricated direct buried insulation pipes, visit: [http://news.chinawj.com.cn](http://news.chinawj.com.cn)
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