Mega series is developed by American Tweco company, the design idea is to create the products that have same life-span with welding machine. To achieve this goal, we need to solve the durability of the swan neck first, it cited a lot of design, the prominent feature is the gun neck for external insulation.

After the nozzle which is easily be suffered by arc damage and thermal radiation damage and its neck are using external double insulation, The gun neck from the fundamental structure of the view is a simple copper tube, outer protective skin and nozzle completely separated, the gun neck will no longer have the danger of the welding current breakdown.

In addition, the connection between the main cable and the gun neck and the rear connector is connected with the pressure block type, so that the conductive cable is in contact with the gun neck and the rear joint by area. Greatly reduce the contact resistance, moreover to increase the reliability of the connection at the same time, to solve the problem of overheating caused by the connection of large current, thus prolonging the service life of the cable, and do not need special equipment to be able to carry out cable maintenance and replacement of the gun neck.

Follow this principle, the back connector give up the lightweight and intensive European plugs, change the form of separated electricity, gas and control lines. Of course, this way to the user in the welding torch replacement and maintenance increased operation difficulty. Lincoln, Miller welding machine are all using Mega welding torch as the original, the Mega welding torch life is particularly long, especially adapted to the air cooling mode under large current continuous work, that is, to adapt to the steel structure metallurgy industry and difficult to configure the water cooling system of the field operations.

With the integration of European and American markets, these products have infiltrated each other, and have been compared in actual use, user found: Ergo torch light, easy to plug, consumables cheap, but not suitable for heavy-duty use occasions, the Mega welding torch rugged, good maintainability, but accessories, especially nozzle, manufacturing process complex, high price, and interface forms cumbersome, interchangeability is not good.