The hot rolling method is to heat the A588 Gr C structural steel plate steel material to about 1000 ℃ ~ 1250 ℃ and use the rolling mill to roll it. The traditional hot rolling process is generally divided into the following two steps: the first step is to use the primary rolling mill or billet rolling mill to roll the ingot, billet or continuous casting billet into a certain shape and size of billet. This kind of A588 Gr C structural steel plate rolling process is usually called semi-finished product production, also called blank production.
A588 Gr C structural steel plate 2020 October inventory: 16*2200*12000, 10*2400*8450, 27*3510*7900, 14*2070*9060, 38*3300*13400, 30*2020*7000, 10*2400*8300, 35*2230*6000, 10*2200*8000, 8*2210*11000, 30*1600*10720, 25*2100*8400, 23.5*2950*10500, 38*3300*13400, 30*1600*10720, 8*2200*11200, 24*2500*5800, 25*2400*11600, 35*2220*10000, 21.5*1630*13480, 20*1950*9150, 80*2250*8850, 30*1600*10720, 21.5*1630*13480.
The elongation of low alloy high strength steel is 15% - 23%, and the impact absorption energy is more than 34J at room temperature. The A588 Gr C structural steel plate, low alloy high strength steel has good plasticity and impact resistance, which can avoid brittle fracture during impact, and make cold bending and welding easy. In addition, the brittle transition temperature of low alloy high strength steel is low, and the absorbed work value of Grade E steel is not less than 27J at - 40℃. This is of great significance to the engineering components and transportation tools such as vehicles, ships, offshore oil platforms, containers, bridges and so on.
According to the data released by the Japan iron and Steel Union (JISF), the export volume of Japanese steel in the second quarter of 2020 A588 Gr C structural steel plate is about 4.959 million tons, a year-on-year decrease of 14.2%; the export volume in the first half of 2020 is about 11.07 million tons, with a year-on-year growth of 1.8%. It has been revealed that the year-on-year increase in export volume does not mean that Japan's export A588 Gr C structural steel plate situation of Pugang is better in the first half of the year, but only because the base number of the same period last year is too low.
