Seamless Steel Oxygen Cylinder Outside diameter : 140/204/219/232/267/279mm Water capacity:10L/20L/40L/45L/48.8L/50L/60L/68L Seamless Steel Oxygen Cylinder1)Standard: ISO9809, ISO11439, DOT 3AA, EN1964, GB50992) Outside diameter : 140mm/204mm/219mm/232mm/267mm/279mm3) Water capacity:10L/20L/40L/45L/48.8L/50L/60L/68L/70L4) Working pressure WP: 150BAR/200BAR5) Material: 34Mn2V / 37MN / 34CrMo4