Q355B steel is a low-alloy high-strength structural steel, which is widely used in bridges, vehicles, ships, buildings, pressure vessels, special equipment and so on. , where "Q" indicates the yield strength, and 355 indicates that the yield strength of the steel is 355MPa, and its yield value will decrease with the increase of material thickness.
The raw materials, semi-finished products and finished products needed in the steelmaking process of Q355B square rectangular tube need to be transported by lifting equipment and locomotives, and there are many dangerous factors in this process. Therefore, when designing the workshop, we should consider enough space, pay attention to equipment innovation and strengthen maintenance. It is also necessary to improve the operation level of workers and strictly abide by the safety production regulations.
Matters needing attention
It is a thin-walled hollow square steel tube made of Q235 hot-rolled or cold-rolled strip steel and welded by high frequency after cold bending. It has excellent comprehensive mechanical properties, good weldability, good cold and hot working and corrosion resistance, and first-class low temperature toughness. Usually used in building construction, machinery manufacturing, steel structure and other fields, such as power engineering, pesticide mechanical stripping, glass curtain wall, building construction, bridges and so on.
Before steel is transported to the construction site, corresponding preparations must be made. For example, where steel bars are placed, it is necessary to ensure that the ground flatness meets the standard, and gravel should be laid on it, and waterproof slopes should be made on both sides in the middle to prevent water accumulation in the later period, and steel bars should also be paved with wood. It is necessary to ensure that the wood thickness is more than 20 cm and the spacing is 1.5 m.