Q345 steel belongs to low alloy high strength steel, which is mainly used in construction and engineering structure. Q345 steel contains a small amount of alloy elements, and it is widely used in various welding structures, such as bridges, vehicles, ships, pipelines, boilers, large vessels, storage tanks, heavy machinery and equipment, mining machinery, power stations, plant structures, low-temperature pressure vessels, textile machinery parts, etc. Q345 steel has higher yield strength than Q235 steel. Of course, the price of S355ML+Z 25, Q345 steel is higher than that of Q235.
High strength steel S355ML+Z 25 product selling stock:8*2000*6000, 12*1524*6096, 16*1720*10070, 12*2335*5000, 8*2000*9300, 15*2430*5650, 20*1830*10950, 14*1524*6096,8*2000*5300, 15*2000*12000, 22*2438*6096, 15*2000*10000, 10*1600*6500, 14*2000*10000, 22*2150*8500,18*2000*10000, 10*1600*6500, 14*2438*6096, 38*2700*6000, 40*2030*12400.
Hot-rolled steel sheet / cold-rolled steel sheet: Steel ingots or slabs are difficult to deform at normal temperature and difficult to process. They need to be heated to 1100 ° C to 1250 ° C for rolling. This S355ML+Z 25 rolling process is called hot rolling. Rolling at room temperature is generally understood as cold rolling. However, from the point of view of metallurgy, the boundary between hot rolling and cold rolling should be distinguished by the temperature of metal recrystallization, that is, rolling below the recrystallization temperature is cold rolling; Rolling above the recrystallization temperature is hot rolling.
On the morning of March 10th, according to the news conference of the Joint Prevention and Control Mechanism of the State Council, Deputy Director of the Emergency Management Department Shang Yong said that since the outbreak, 20,000 and 172,000 safety guidance groups have been organized nationwide, keeping a close eye on High-risk industries such as coal mines and non-coal mines inspected and guided 223,000 enterprises and rectified 168,000 hidden problems.