Vacuum adiabatic tube technical design and characteristics 1, the inner tube at liquid nitrogen temperature, shrinkage rate of 0.3% , for rigid tube, set the necessary compensator; 2. Install high vacuum multi-layer adiabatic cryogenic globe valve, check valve, emergency shut-off valve and safety, full relief system in the pipeline; The inner and outer tubes are made of Austenitic stainless steel 06Cr19Ni10. The special multi-layer insulation material and gas adsorbent are used in the interlayer. The supports with low thermal conductivity are used in many fields such as industrial gases, medicine, biology, electronics, aviation, automobile, beverage, etc. .