Composition
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1.inner steel pipe
2.polyurethane insulation layer
3.outer HDPE protection pipe
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Usage
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1.urban centralized heat supply
2.warm room
3.coal mine
4.petroleum
5.chemical and other anti-corrosion insulation field
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Medium temperature
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50-140centigrade
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Working pressure
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Less than 1.6Mpa
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Working lifetime
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30-50years
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Laying method
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1.direct bury
2.built on stilts
3.trench
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Technology
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1.Advanced Corona treatment
2.Impeller blasting
3. Leakage alarm line
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Standards
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CJ/T114-2000, CJ/T155-2001, EN253:2003
GB/T9711.1-1997, GB/T8163-1999
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Advantages
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1.good insulation properties ,low heat loss (the 25% of traditional pipes),
2.energy saving
3.waterproof and corrosion resistance
4.no trench, be directly buried in ground or water
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