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■The high-vacuum multi-layer adiabatic cryogenic liquid transport pipeline (Vacuum Pipeline) is a special pipeline, which is used for transporting the cryogenic liquid. The lining and outer steel tube adopts the special type stainless steel. The material in the interlayer adopts the high-vacuum special multi-layer counter-radiation complex material, vacuum flange and special interface technique. The interlayer keeps the high-vacuum state for a long time to avoid the cold-lose. Our Vacuum Pipeline has a beautiful appearance and it is durable and safe. It completely meets the requirement of long-distance transport of cryogenic liquid.
Main Technical Parameters
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Pipeline Specification |
Nominal diameter |
DN15 |
DN20 |
DN25 |
DN32 |
DN40 |
DN50 |
DN65 |
DN80 |
DN100 |
DN125 |
DN150 |
| Inner tube |
φ20 |
φ25 |
φ32 |
φ38 |
φ45 |
φ57 |
φ76 |
φ89 |
φ108 |
φ133 |
φ159 |
| Outet tube |
φ76 |
φ89 |
φ89 |
φ108 |
φ108 |
φ114 |
φ133 |
φ159 |
φ168 |
φ219 |
φ219 |
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According to the customer’s requirement.
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Design temperature |
-196℃ |
Working medium |
Low-temperature liquids such as LO2,LN2,LAr,LNG,etc |
Material of inner and outer cylinders |
OGr18Ni9 SUS304 |
Insulation mode |
High vacuum multi-layer enwinding insulation |
Interlayer pressure |
＜0.004Pa |
Pipeline cold loss |
0.5W//m |
Pipeline vacuum leak rate |
＜2×10-9 |
Inner tube strength test |
In accordance with operating pressure |
Air tightness test |
In accordance with operating pressure |
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