*NOTES: -a). Various types of acetylene gas cylinder valves,cylinder caps,steel valve guards can be optional; -b).We have many advantages of satisfying our potential customers' MIXED needs of different sizes of HP steel gas(O2/Helium/Argon/CO2/N2) cylinders raning from 0.2L~68L @15Mpa/20Mpa & ISO3807-1/2 Dissolved Acetylene Cylinders(2L~60L).