Some people think that cold-rolled bars are out of date, and the quality of cold-rolled bars is inferior to that of hot-rolled bars. As a tungsten carbide wire factory, our excellent wire tools are sold abroad, including hot rolling tools and cold rolling tools. We found that the sales of cold rolled three-dimensional rolls did not decrease because of the popularity of hot rolling technology. In fact, cold-rolled steel bar and hot-rolled steel bar have their own advantages, and they are usually used in different places because of their different characteristics.
As far as I know, many people think that cold-rolled bars are not good because they confuse cold-drawn bars with cold-rolled bars.
In fact, cold-rolled ribbed steel bar is the replacement product of Cold-Drawn Low-Carbon Steel wire. In cast-in-situ concrete structure, it can replace grade I steel bar to save steel. It is a better kind of cold-processed steel of the same kind. Compared with cold-drawn steel bar, cold-rolled ribbed steel bar has many advantages.
1. Steel with high strength can save construction steel and reduce engineering cost. Compared with hot rolled bars, LL550 cold rolled ribbed bars can save 35%-40% steel in cast-in-situ structures, especially in roofs. This means that every ton of cold-rolled ribbed steel bar can save at least 100 knives of steel cost. If we consider not using bending hooks, we can save more steel.
2. The bond and anchorage performance between cold-rolled ribbed bar and concrete is good. Therefore, the phenomenon of cracking in anchorage zone and steel wire sliding is eliminated, and the bearing capacity and anti-cracking ability of the end of the component are improved. In reinforced concrete structure, the crack width is smaller than that of the smooth round steel bar or even the hot-rolled threaded steel bar.
3. The elongation of cold-rolled ribbed bar is larger than that of cold-processed steel of the same kind. This means that in the transverse structure, the stability of cold-rolled steel bar is higher.
So the statement that cold-rolled steel bars are out of date is not accurate. Cold-rolled ribbed bar, as a kind of high-efficiency steel bar, has broad application prospects. As a tungsten carbide tool factory, we are committed to providing high cost-effective cold roll, hot roll, descaling roll, over-line die and other wire tools for cold rolling and hot rolling to meet the needs of various wire producers. At the same time, we are keeping pace with the development of the times, constantly developing and improving our products.
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