Polyurethane direct buried insulation pipe, polyurethane prefabricated insulation pipe supplier

Description :

　　Overview of prefabricated buried insulation pipes:

　　Prefabricated buried insulation pipes are widely used in liquid and gas transportation pipelines, chemical pipeline insulation engineering, petroleum, chemical, centralized heating pipelines, air conditioning and ventilation pipelines, municipal engineering, etc. Prefabricated buried insulation pipe is a type of prefabricated insulation pipe with good insulation performance, safety and reliability, and low engineering cost. Effectively solved the insulation, sliding lubrication, and waterproofing problems of prefabricated buried insulation pipes for 130-600 high temperature heat transfer in urban centralized heating. Prefabricated buried insulation pipes not only have traditional trench and overhead pipeline technology and practical performance, but also have social and economic benefits, and are powerful measures for heating energy conservation.

　　Characteristics of prefabricated buried insulation pipes:

　　Prefabricated buried insulation pipe is composed of steel pipe, fiberglass inner sheath, and fiberglass outer shell. Its characteristics include: high temperature resistant insulation layer, lubrication layer, and elastic sealing element. This prefabricated insulation pipe effectively solves the insulation, sliding lubrication, and waterproofing problems of the 130-600 high-temperature heat transfer prefabricated buried insulation pipes in urban centralized heating.

　　Main technical parameters:

　　1. Technical indicators of polyurethane insulation layer:

　　Experimental standards for project unit indicators

　　Density Kg/m3 60 GB/T 6343

　　Compressive strength Mpa 0.3 GB/T 8813

　　Thermal conductivity W/m& middot; k 0.033 GB/T 10297

　　Water absorption rate 10 GB/T 114

　　Closed cell rate 88 GB/T 10799

　　Heat resistance 120 or 150 EN 253

　　Axial shear strength Kpa 120 CJ/T 114

　　2. Main technical indicators of prefabricated buried insulation pipes:

　　Experimental standards for project unit indicators

　　Insulation thickness mm design requirement CJ/T 114

　　Axial eccentricity mm 3.0/4.5/6.0/8.0

　　Axial shear strength Mpa 0.12 (23&Plusmn; 2)

　　Impact resistance should not have visible cracks

　　Alarm line impedance M Ω 20

　　Prefabricated buried insulation pipe - Advantages:

　　1. It has strong corrosion resistance and waterproof ability, and the overall cost is low

　　According to relevant departments' calculations, double pipe heating pipelines can generally reduce project costs by about 25% (using fiberglass as a protective layer) and 10% (using high-density polyethylene as a protective layer).

　　Low heat loss and energy conservation. The heat loss is only 25% of that of traditional pipes

　　Polyurethane insulation pipe with thermal conductivity and hydrophobicity of 0.03kg/cm3

　　3. Long service life

　　Proper installation and use can extend the lifespan of the pipeline network to 30-50 years, with low maintenance costs.

　　4. Less land occupation and faster construction are beneficial for environmental protection

　　It can reduce excavation volume by more than 50%, and reduce civil masonry and concrete volume by 90%.

AfterSalesService :

• Directly buried insulation pipe