Design:
The shrinkage rate of the inner tube at liquid nitrogen temperature is not higher than 0.3%.
Install high vacuum multi-layer insulated shut-off valves, check valves, emergency shut-off valves, and safety systems directly on the pipeline to ensure integrity.
Plug in vacuum connectors have low heat leakage and no frost formation.
Material selection:
Both the inner and outer pipes are austenitic stainless steel pipes (304/316).
The interlayer adopts world-class specialized multi-layer insulation materials and gas adsorption materials.
A support method with extremely low thermal conductivity.
Installation:
Plug in connection, commonly known as flange vacuum tube, is made in sections and connected by vacuum flange welding between pipe sections, commonly known as welded vacuum tube. The joint welding of low-temperature insulation pipe is made in sections.