We could supply industrial grade 99.99% purity argon Ar gas, welding argon gas of purity 99.9%, 99.99% ... and 99.999% Industrial grade welding argon Ar gas, 99.99% purity argon gas/industrial gas/welding gasMain ... : 99.9% ,99.999%, 99.999 Working pressure: 150 barArgon (Ar) is a colorless, nonflammable, inert gas. It acts as a ...