External difference between finish rolling rebar and ordinary rebar

For people outside the industry, it is difficult to tell the difference between the two on the surface. So this gives some sinful merchants an opportunity to take advantage. However, careful distinction shows that there are still some differences between the two. In terms of specifications, there are no 12 or 14 specifications for finish rolled rebar, while there are no 15 specifications for ordinary rebar. In terms of naked eyes, there are no longitudinal ribs for finish rolled rebar, and the threads are relatively straight compared with those through. Although it is somewhat ambiguous, it is clear when you go to buy 1.

In fact, finish rolling rebar has a vocabulary, that is, prestressed rebar. That is, to deal with it in advance during production. Therefore, the strength of this material is much higher than that of the pass, and the yield ratio is not a series. Therefore, finish rolling rebar is more used in various large-scale projects, including water conservancy and high-speed rail, roads and bridges, and dams. And ordinary because of the extension rate is larger, more only auxiliary use in bending workpiece.