BBN employees work hard and work hard in their work. In life, colleagues care about each other, like a family, and accompany each other at important moments in life. BBN Steel organizes employees to carry out tourism activities every year, so that families can be exposed to nature and relax physically and mentally. The good combination of working and rest can achieve the goal of hard work and happy life.
S355J2 steel plate A709 Gr 100 bridge steel plate rolling process is controlled rolling process. In the rolling process, the ingot rolling temperature is 1000-1050℃; in the first stage, the low-speed and large reduction rolling process is adopted, the high-temperature stage is 950-1000℃, the rolling speed is 1.6-2.0m/s, the A709 Gr 100 bridge steel plate single reduction rate is 15-20%, and the cumulative reduction rate is 40-45%, so as to ensure sufficient deformation of ingot. In the first stage, the start rolling temperature is 910-930℃, and the finish rolling temperature is ≤ 870℃.
Q/BQB 310-2009 SAPH310 automotive structural steel technical data Chemical composition (melting analysis)% Carbon : ≤0.10, Silicon : ≤0.05, Manganese: ≤0.50, Phosphorus: ≤0.035, Sulfur: ≤0.035, Aluminum: ≥0.01 Mechanical properties Yield strength MPa: ≥185 Tensile strength MPa: ≥310 Elongation: ≥35
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