compressed high pressure air cylinder 1. Standard: GB5099-94/ISO9809 2. O.D.: ... 3. Capacity: 40L 4. WP: 15MPa TP:25MPa compressed high pressure air cylinderThe air cylinders are all made of high quality ... gases, such as oxygen, hydrogen, argon, krypton, nitrogen; and high-pressure liquefied gases, such as carbon dioxide and ethylene. They can ...