TIG welding equipments are capable of modulating the welding-current. This means that the welding current varies between a higher and a lower value, with adjustable frequency (0.5-5 Hz) and duty cycle. This method is referred to as slow pulse welding. This facilitates the easy control of the quality of the weld.
Tile and grout cleaning equipments are used to clean porous hard surfaces like tile and grout, concrete, and stone by putting down a stream of high-pressure water and immediately vacuuming it up. It uses a combination of rotary nylon cleaning brush bristles, spray jets and vacuum slots to thoroughly clean tile and grout.