Ferromaxx® Plus (M20ArHeC20/12) weld process mixture classified as M20 according to ISO14175. The best gas mixture for faster, cleaner MAG welding of carbon steel. Contains 20% Helium and 12% Carbon Dioxide in Argon. Generally suitable for MAG welding of carbon steel. Supplied in a 50 litre steel cylinder at 300 bar. Integra® cylinders are safer, smaller and lighter. The Integra® cylinder is designed to be used with a choice of Integra® flow optimisers (available separately) which ensure optimum weld results whilst reducing excessive gas usage too.