Thermal insulation direct buried pipe
pipecan also be called pre insulated pipe, they are a kind of heat pipeline. We can supply high quality , welcome to choose us!
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Product Indexes |
Reference Standard |
Standard Requirement |
Our product value |
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Outer protection pipe |
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Density (kg/m3) |
CJ/T114-4.2.3.1 |
≥940 |
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Elongation at break (%) |
CJ/T114-4.2.3.4 |
≥350 |
618 |
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Tensile yield strength (MPa) |
CJ/T114-4.2.3.4 |
≥19 |
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Longitudinal shrinkage rate (%) |
CJ/T114-4.2.3.5 |
≤3 |
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Long term Mechanical properties |
CJ/T114-4.2.3.6 |
>1500h(80℃,4.0 MPa)free from damage |
Pass |
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The difference of the melt flow rate (g/10min) |
CJ/T114-4.2.3.2 |
≤0.5 |
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Carbon Black Content % |
CJ/T114-4.2.3.1 |
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Polyurethane insulation layer |
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Density (kg/m³) |
CJ/T114-4.3.2 |
≥60 |
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Average pore size (mm) |
CJ/T114-4.3.1 |
≤0.5 |
qualified |
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Percentage of close area(%) |
CJ/T114-4.3.1 |
≥88 |
94 |
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Compressive strength(MPa) |
CJ/T114-4.3.3 |
≥0.3 |
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Water absorption(%) |
CJ/T114-4.3.4 |
Immersion in boiling water 90 minutes, bubble water absorption should be not more than 10% |
≤5.53 |
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Working steel pipe |
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Seamless steel pipe(≤DN150) |
GB8163 |
20# |
qualified |
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Spiral steel pipe(≥DN200) |
GB/T9711 or SY/T5037 |
Q235B |
qualified |
PRODUCT FEATURES
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Product name |
Thermal insulation direct buried pipe |
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Length |
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Nominal diameter |
DN25-1800 |
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Laid way |
Buried |
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Application |
Fluid Pipe, Natural gas, Gas, Oil, Hydraulic, chemical, drill, etc. |
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Production Standard |
The national standard GB/T29047-2012, CJ/T114-2000, CJ/T155-2001 |
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