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Steel rolling production process
Medium-thick plates refer to steel plates with a thickness of 4.5-25.0mm, those with a thickness of 25.0-100.0mm are called thick plates, and those with a thickness of more than 100.0mm are extra-thick plates.
Main uses of plate: construction engineering, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc.
Usage of ordinary medium and heavy plates: widely used to manufacture various containers, furnace shells, furnace plates, bridges and automotive static steel plates, low alloy steel plates, bridge steel plates, general steel plates, boiler steel plates, pressure vessel steel plates, Pattern steel plates, automobile beam steel plates, certain parts of tractors and welding components.
Bridge steel plates are used for large railway bridges. It is required to withstand dynamic load, impact, vibration, corrosion resistance, etc.
Shipbuilding steel plate: used to manufacture marine and inland watercraft hulls. It requires high strength, plasticity, toughness, cold bending performance, welding performance, and good corrosion resistance.
Boiler steel plates: used to manufacture various boilers and important accessories. Because the boiler steel plates work under medium temperature (below 350°C) and high pressure, in addition to high pressure, they are also subject to impact, fatigue load and water and gas corrosion. It is required to ensure a certain strength, and also have good welding and cold bending performance.
Steel plates for pressure vessels: Mainly used to manufacture pressure vessels or other similar equipment for petroleum and chemical gas separation and gas storage and transportation. The general working pressure is from normal pressure to 320kg/cm2 or even 630kg/cm2, and the temperature is -20- Working within the range of 450°C requires that the container steel plate has a certain strength, good plasticity and toughness, but also good cold bending and welding properties.
Automobile beam steel, used to manufacture low-alloy hot-rolled steel plates with a thickness of 2.5-12.0mm for automobile beams (longitudinal beams, cross beams). Due to the complex shape of automobile beams, in addition to higher strength and cold bending performance, good stamping performance is required.