posiciones de soldeo pe pf convalidacion

material recopilado de distintas fuentes, destinado al aprendizaje de soldaduras tipo "tig: tungsten inert gas" 141 gtaw (gas tungsten arc welding), electrodos revestidos smaw 111 (shield metal arc welding), "mig: metal inert gas" 131, "mag: metal active gas" 135, gmaw ( gas metal arc welding), aluminotérmica, arco sumergido saw (submerged arc welding), fcaw (flux-cored arc welding), etc.