Plasma Cutting

Plasma cutting is a melting process in which a jet of ionised gas at temperatures above 20,000°C is used to melt and expel material from the cut. During the process, an electric arc is struck between an electrode (cathode) and the workpiece (anode). The electrode is recessed in a water- or air-cooled gas nozzle (SMT) which constricts the arc causing the narrow, high temperature, high velocity plasma jet to form. HD (High Definition) CNC plasma cutting is at the forefront of our business.

We have two HD plasma machines, (fixed head and a bevel plasma), both of which are CNC.  HD technology concentrates more energy in a smaller area, and increased plasma density creates a precision cut with a narrower kerf, less top-edge rounding, and less bevel, operating with true hole technology.

This equipment produces significantly better hole quality than had previously been possible using plasma, helping to virtually eliminate hole taper and making the plasma process suitable for many jobs previously cut with laser.

Our current cutting capability is up to 60mm mild steel cutting a smooth edge. The plasma beds are approximately 3000mm X 12000mm long which can be extended to suit any plate or profile requirements.

We have extensive experience in cutting S275, S355, stainless, boiler grades, pressure vessel grades, weathering steel, and abrasion plate. The bevel plasma should not be overlooked and adds an extra string to S M Thompson’s bow, offering chamfering to your requirements. This process is ideal for weld preps on profiles and it compliments our plate rolling facilities.

Find out more about our plasma cutting service by sending an enquiry here

70+ Year
Track Record



Scroll to Top

This website uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Privacy Policy.