The production process of hot-rolled steel plate and cold-rolled steel plate is different. Hot rolled steel plate is rolled at high temperature, and cold rolled steel plate is rolled at normal temperature. Generally speaking, cold rolled steel plate has better strength and hot rolled steel plate has better ductility. The thickness of normal strength RE flat bars cold rolling is generally smaller, and that of hot rolling can be larger. The surface quality, appearance and dimension accuracy of cold rolled steel plate are better than that of hot rolled steel plate.
Oxygen is a harmful element in normal strength RE flat bars steel. With the increase of oxygen content, the strength of normal strength RE flat bars steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of normal strength RE flat bars steel.
Global normal strength RE flat bars crude steel production in March this year increased by 2.6 percent month on month and fell by six percent year on year to 147.1 million metric tons. accordina to the World Steel Association (worldsteel).In the first quarter of this year, global normal strength RE flat bars crude steel production decreased to 443.03 million mt, down 1.4 percent year on year.
BBNsteel shipbuilding steel plate normal strength RE flat bars for sale: 17*1640*9880, 17*2050*6000, 15.5*2800*8200, 16.5*2770*7200, 17*2790*5700, 19.5*2980*5300, 17.5*1550*8100, 16.5*1500*8750, 18*1500*7000, 17.5*3100*6350, 20*2880*5830, 17.5*2000*10000, 17*2970*6200, 18*1500*7230, 18*2450*5500, 17.5*2320*13000, 17.5*1750*10400, 18*2810*4200, 18*2520*5000, 20*3000*7500, 18.5*2600*10800.
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