Hello everybody:
Hi
Gerald, even when I was warned that this thread is old, I think I can offer my two cents to your inquiry for some welding instruction material in spanish.
1. "Fundamentos de la Soldadura por Arco manual". (Manual Arc Welding Fundamentals)
http://galvec.com/curso.soldar.arco.pdf.
2. "Consumibles para soldadura de construcciones de acero - Böhler Welding". (Welding Consumables for Steel Structures)
http://www.boehler-welding.com/arabic/files/Steelconstr_SPA.pdf.
3. "Consumibles de Soldadura para Centrales Hidroeléctricas" (Welding consumables for hydro power stations - Böhler Welding)
http://www.boehler-welding.com/german/files/Hydropower_SPA.pdf.
Gerald I feel fine that people like you are giving support by teaching to people that speaks spanish language. Thanks a lot.
Gerald, me siento bien que gente como tú está apoyando al enseñar a gente que habla español. Muchas gracias.
P.D. If I can be of some help for you in this subject of welding, particularly regarding in educational material in spanish, please do not hesitate and let me know through the forum.