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Acronym stands
1.MIG = Metal Inert Gas
2.GMAW = Gas Metal Arc Welding
3.FCAW = Flux Cored Arc Welding
4.Dual Shielding = GMAW-G+S, or MIG welding with Gas Shielding and Flux Cored wire.
5.SMAW = Shielded Metal Arc Welding
6.CFH (AKA cfh) = Cubic Feet per Hour
7.IPM = Inches Per Minute

Welding Defects
Common weld defects include:
•Lack of fusion
•Lack of penetration or excess penetration
•Porosity
•Inclusions
•Cracking
•Undercut
•Lamellar tearing