Rebar is a common name for hot-rolled ribbed steel bars. The grade of common hot rolled steel bar consists of HRB and the lowest yield point of this grade. H, r and b are the initials of the words Hotrolled, Ribbed and Bars, respectively.
Hot rolled ribbed steel bars are divided into three grades: Grade II HRB335 (old brand name 20MnSi), Grade III HRB400 (old brand names 20 mnsi, 20MnSiNb and 20Mnti) and Grade IV HRB500.
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.
Import and export
Rebar is the steel that must be used for medium-sized and above building components, and China imports a certain batch every year. The main producing countries and regions are Japan and Western Europe. The number of rebar exports has increased, and the main domestic exporters are steel enterprises in Beijing, Tianjin, Shanghai, Wuhan, Sichuan, Liaoning and other provinces and cities. The export areas are mainly Hong Kong, Macao and Taiwan and Southeast Asia.
The transverse rib geometry of imported steel bars is mainly ordinary square thread or ordinary oblique square thread. The cross rib geometry of domestic rebar mainly includes spiral, herringbone and crescent. The ordering principle of steel bars is generally based on the mechanical process performance or mechanical strength index on the basis of meeting the requirements of engineering design.
consume
China's steel consumption has obvious characteristics of developing countries. Steel used in construction and industry accounts for about 90% of the total steel used, of which construction steel accounts for 50%. As China is in the historical stage of rapid urbanization, there is a great demand for construction steel. As the main building steel, rebar consumption has always occupied a large proportion of China's steel output.
Before 2000, the proportion of small profiles (mainly rebar) was around 25%. After 200 1, with the transfer of world manufacturing to China, the proportion of production and sales of plate, pipe and strip increased gradually, while the proportion of construction steel decreased year by year.
From 200 1 to 2007, the consumption of rebar in China increased from 4369 1 10,000 tons (small profile output) to 95510.2 million tons, and the proportion of rebar in steel consumption decreased from 25.8% to10.8%.
influencing factor
There are three main factors that affect the price change of rebar: first, the production cost; Second, the relationship between supply and demand, the factors affecting the relationship between supply and demand are more complicated; Third, speculative factors, which sometimes lead to irrational price rises or falls. The factors that affect the production cost include the cost of raw materials and energy, and the factors that affect the relationship between supply and demand include macroeconomic operation cycle, output and consumption, inventory, import and export policies, etc.