Due to the special manufacture craft and the new structure of laser welded dimple-plate jacket, it is necessary to be studied by experimental and theory analysis (mainly finite element analysis).

Cryogenic high-pressure vessel wound by flat metal strip with a liquid nitrogen precooling jacket is a new fashion adiabatic equipment, which consists of inter vessel and outer vessel.

This process showed a stable arc, good welding joints without any gas pores and cracks.