Teachers, parents, and administrators might want to know how well students are reading and writing in general, independent of the specific instructional program. This requires a different type of formal assessment.
GMAW or Gas Metal Arc Welding. More commonly called MIG welding this welding type is the most widely used and perhaps the most easily mastered type of welding for industry and home use. The GMAW process is suitable for fusing mild steel, stainless-steel as well as aluminium. GTAW or Tungsten Inert Gas.
The assemblage of parts is called a weldment.There are two groups of welding processes according to the state of the base material during the welding process:  Liquid-state welding (fusion welding), and  Solid-state welding.Fusion welding is by far the more important category.