I've got an old Oxy-Acetylene Handbook here and I've been reading through it trying to familiarize myself with some techniques before burning up some steel. They reference Oxweld and Purox blowpipes and tips only. I might be wrong, but some of the tip number sizes they mention for welding thin steel seem significantly larger than a Victor tip number.
Are Oxweld, Purox and Victor tip size numbers the same or different? If different, is there a conversion table readily available to convert to the Victor sizes?