... Alloy Seamless Gas Cylinder is featured for some unique strong points. ... by 40%,its connatural oxide film equips itself with high anticorrosion performance,and its no magnetism makes it used ... rescue,diving,fire extinction,beverage dispensing and storage of high purity standard gas.Specification: Outside diameter(mm): Service pressure(Mpa): 15Mpa ... ,12,13.4,15,20, Aluminum Alloy Seamless Gas Cylinders