1. O.D.: 219mm 2. Capacity: 40L 3. Different capacity. 4. Standard: GB5099/ISO9809 5. WP: 15MPa/150bar TP: 25MPa/250bar The seamless steel gas 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 ...