... , 34CrMo4 2) Outside diameter: 108-325mm 3) Water capacity: 2.5L-110L Specifications:1) Material: 34Mn2V, 30CrMo, 34CrMo42) Outside diameter: 108 ... -325mm3) Water capacity: 2.5L-110L4)Standard:GB5099,ISO9809-1,EN1964-1,DOT-3AA,JISB8241 ... delivery (3~4 weeks) 4. Best after-sale service 2.5L-110L gas oxygen cylinder