BS EN 439: 1994. Welding consumables. Shielding gases for arc welding and cutting

Gas-shielded welding, Metal-arc welding, Arc welding, Welding, Arc cutting, Thermal cutting, Gases, Mixtures, Classification systems, Designations, Compositional tolerances, Purity, Dew point, Liquefied gases, Density, Moisture, Relative density, Pressure, Boiling point