Welded insulated cylinder is a type of high vacuum drawn, multi-layer heat insulating removable cryogenic liquid vessel which can be applied to store, transport the liquefied gas products liquefied oxygen, liquefied argon, liquefied nitrogen, liquefied carbon dioxide and N2O if charged by the high pressure cryogenic cylinders). 1)Service pressure(MPa):1.38--2.84 2)Filling content:LO2,LN2,LAr,LCO2,LN2O 3)Storage capacity,Liquid liters:165/185/193/240/265