... 100/120 Series 1. Purpose and character 1.1 Purpose:Cutting work-piece easily, high efficiently, perfectly and cheaply, ... titanium.2.1 Character:2.1.1 Widely cutting field, not only cutting normal carbon steel instead of oxygen acetylene,but ... , it is higher reliability.2.1.4 Low air pressure protection (indicator), over-head protection and want phase protection (indicator). Air Plasma Cutting