Caro Giuseppe,
So far nobody has answered your question, so I'll shoot one.
On this same AWS site there are quite a few manufacturers of welding material advertising their products. Before anything, make a search in this site. If this doesn't work, go to the yellow pages of the city that you live and take a look under the words "Welding material". Give a couple (or three, or four) phone calls to the people advertised there. If this still doesn't work, take a look at the Welding Journal, published by AWS. It shouldn't be that difficult to find the Journal if you're not a member of AWS: a good technical library (university or vocational high school) should have it.
Datti da fare e in bocca al lupo.
Ciao
Giovanni S.Crisi (as Italian as you)
Sao Paulo - Brazil
By -
Date 11-30-2000 18:25
I use a 6000 Series Respirater facepiece by 3M with two 3M 2097/07184 P100 Particulate. Call in U.S.A., 1-800-243-4630 call in Canada, 1(519) 452-6137 or 1-800-265-1840, ext. 6137.