Understand proper use of: pipe, and tube preparation methods, calipers, manual tube cutters, dimensional tolerances/weld shrinkage, tacking methods, isometric drawings, BOM, purge/restriction methods, straightening techniques and methods for oxidation free welds. Experience with measuring, hand & power tools, welding cutting, facing and measuring equipment: Calipers, Height Gauges, Micrometers, Gauges, Values, Regulator's, and Specialized Fixturing.