Written verification that a welder has produced welds meeting a prescribed standard of welder performance.
glossary
glossary
Unit of electromotive force, or electrical pressure which causes current to flow in an electrical circuit.
An intense swirling gas similar to a tornado. Most plasma arc cutting systems develop a vortex of some extent in the nozzle during cutting.
A unit of electrical power. Watts = Volts x Amperes
Low alloy steel that is specially formulated to form a thin tightly adhering layer of rust. This initial layer prevents further rusting and thus, the need to paint the steel is eliminated. The main alloys in this steel are copper and chromium.