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What are HRB335 steel bars and HPB335 steel bars?
HRB335(20MnSi) The standard yield strength of the steel bar is 335MPa, the diameter is 6 ~ 50 mm, and the elastic modulus is 200GPa.

HRB steel bar is hot-rolled ribbed steel bar, that is, hot-rolled ribbed steel bar. The so-called ribbed steel bar refers to the deformation of the steel bar surface by hot rolling process to increase the bite force with concrete, including surface ribbed steel bar, spiral steel bar, herringbone steel bar, crescent steel bar and so on.

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From a macro point of view, the domestic steel price of 20 13 has fallen sharply, and the domestic steel price will fall sharply, because there has been a problem of overcapacity, and the price of iron ore, the main raw material, has also fallen. China's slowing economic growth is curbing the country's demand for steel and iron ore, which has brought the prices of these two commodities down to a few months low and put the expansion plans of global iron ore producers at risk.

It is expected that the trend will not change in the next few months, because there is too much production capacity and the speed of industry integration is too slow; At the same time, the problem of oversupply of iron ore has also increased, indicating that its price will continue to fall. 20 13 coal coke steel futures fell again, while the stock market was stable, and the differentiation between steel futures and stock market trends intensified. The reason is the intensification of the contradiction between supply and demand in the steel industry chain itself.

Baidu encyclopedia -HRB reinforcement