LGK63/80/100/120 Series 1. Purpose and character 1.1 ... normal carbon steel instead of oxygen acetylene,but capable to cut stainless, aluminium, copper, nickel and titanium, compound metal, ... etc.2.1.2 It’s convenience to use, cut shaped good, don’t change chemical compound while cutting. ... So, it is higher reliability.2.1.4 Low air pressure protection (indicator), over-head protection and want phase ...