Scratch on Rebar 2

[hkiremitci]

Hi everybody;
We are producing reinforcing steel bars. We have some scratch on rebar rib. we saw scratches on 3 or 4 ribs on one 12 meter rebar. Billet does not have any defect like crack. Can you explain reason of this cracks on ribs? Thanks in advance

 

[kingnero]

In Europe, the %C for rebar is limited to (somewhere around) .43%, whereas railroad track is pearlitic (.6-.7 %C). Must be an american thing then?

 

[nouredinne]

Hello

Who still folowing the issure of crack on rebar?
Anyone??