Specifications Co2 cylinder 1.Working pressure:15MPa 2.Diameter: 219mm 3.Volume: 40L 4.Standard: GB5099/ISO9809 Co2 cylinder The seamless steel Co2 cylinder are all made of high quality steel, and are supposed to be used repeatedly for keeping permanent gases, such as oxygen, hydrogen, argon, krypton, nitrogen; and high-pressure liquefied gases, such as carbon dioxide and ethylene. They can be used in industry, agriculture, medical treatment, scientific research and analytical instruments.welcome to choose our Co2 cylinder.