Though indexed as underground pipe insulation, this prefabricated hot-water insulated pipe is not for direct-buried underground installation. It is applied for overhead laying, trench laying and installation inside integrated pipe gallery.
The pipe assembly consists of working steel pipe, high-temperature composite layer, thermal insulation layer and metallic outer jacket. Multiple outer-jacket material options are available, including color steel sheet, hot-dip galvanized steel sheet, aluminium sheet and stainless steel sheet for different anti-corrosion environments. It is manufactured according to standard T/CDHA 1-2013 Prefabricated Hot-water Insulated Pipes and Fittings for Overhead and Integrated Pipe Gallery.
Product Parameters
|
Outer-jacket Outer Diameter(mm) |
Color steel / Hot-dip galvanized steel Min. Wall Thickness(mm) |
Aluminium / Stainless steel Min. Wall Thickness(mm) |
|
90~250 |
0.5 |
0.4 |
|
251~500 |
0.6 |
0.5 |
|
501~800 |
0.8 |
0.6 |
|
801~1400 |
1.0 |
0.8 |
|
1401~2000 |
1.2 |
1.0 |
Production Capacity
· Production size range: DN25-DN1600 mm
· Annual production capacity: 1000 km
· Max allowable nominal pressure: 2.5 MPa
· Normal continuous medium temperature: ≤120 ℃
FAQ
Q: Can this overhead insulated product be used as underground pipe ins?
A: This pipe is designed for overhead, trench and integrated pipe gallery installation. It is not suitable for direct buried underground conditions. If continuous medium temperature exceeds 120 ℃, composite insulation structure is required.
Q: Is this product suitable to act as underground pipe insulation for direct buried projects?
A: This pipe is developed for overhead, trench and integrated pipe gallery installation scenarios. Direct buried application is not recommended. When continuous running medium temperature exceeds 120℃, composite insulation structure shall be adopted.
Q: What are the limiting operating parameters of this pipe?
A: Its maximum allowable nominal pressure is 2.5 MPa. Under normal condition, the continuous medium temperature shall not be higher than 120℃. Higher-temperature working condition requires composite insulation design.
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