When burned with oxygen, this gas, C2H2, burns so hot it can weld iron & cut steel
.... cast, The natural 
curve in the electrode wire for gas metal arc welding as it is .... etching, The 
process of chemically preparing the surface of a specimen so that the metal's 
grain can... [DOC] [TLE] Welding, Cutting, and Brazing Safety - OSHAcademy free online ... [PAR] ... joint to be welded, and is a common method for welding iron, steel, cast iron, ... 
Acetylene: Acetylene (chemical formula C2H2) is a fuel gas made up of carbon 
and hydrogen.