C,
I have been out of the office for the past 3 days, which is why I have not already responded to this. I will send you some more detailed information when I return next week. What I can tell you now is that DIN along with the rest of the European SDO's are collaborating on European Standards (EN), so everything will be DIN EN ... And with this, the standards are organizaed differently. For example, ASTM A 29 covers hot-rolled steel bars. There is no exact equivalent EN because they differentiate based on end-use. For instance, the following standards all cover hot-rolled bars to some extent:
DIN EN 10263
DIN EN 10083
DIN EN 10084
DIN EN 10085
DIN EN 10087
DIN EN 10088-3
Check out the exact titles using Global, etc. I am not sure what the status is regarding tolerances and dimensional requirements, because a draft standard called Euronorm 60 is referenced in my versions of these documents. I'll try to give you some better information next week.