The specifications of medium and heavy plates
Strip steel can be classified into five major categories based on thickness: ultra-thin strip, thin plate, medium plate, thick plate and extra-thick plate. Medium and thick plates refer to steel plates with a thickness ranging from 4.5 to 25.0 mm, while those with a thickness between 25.0 and 100.0 mm are called thick plates, and those with a thickness exceeding 100.0 mm are extra-thick plates.
I. Ordinary medium and heavy plates:
1. Plain carbon steel continuous casting steel plate
Plain carbon steel continuous casting steel plate, as the name suggests, is a steel plate made by hot rolling of ordinary carbon structural steel. Continuous casting steel is a type of steel with incomplete deoxidation. The steel liquid contains a high amount of oxygen. When the steel liquid is injected into the steel ingot mold, the carbon-oxygen reaction produces a large amount of gas, causing the steel liquid to be in a boiling state and thus earning its name.
2. Plain Carbon Steel Quenched Steel Plate
Plain carbon steel quenched steel plate is a steel plate produced by hot rolling of quenched steel billets made from ordinary carbon structural steel. Quenched steel is steel with complete deoxidation. Before pouring the molten steel into the ingot mold, it undergoes thorough deoxidation with manganese iron, silicon iron and aluminum, etc. The molten steel remains calm in the steel mold without boiling, hence it is called quenched steel.
3. Low alloy structural steel plates
Low alloy structural steel plates are produced by hot rolling of low alloy structural steel. Low alloy steel plates are mainly of calm steel and semi-calm steel types. Their advantages include higher strength, better performance, greater steel saving, and reduced structural weight, etc.
4. Weather-resistant steel for welding structures
Weather-resistant steel, also known as corrosion-resistant steel, is a type of steel that contains a small amount of alloy elements such as iron, chromium, nickel, molybdenum, niobium, titanium, zirconium and vanadium, which form a protective layer on the surface of the metal matrix, thereby enhancing the steel's weather resistance and excellent welding performance.
5. High corrosion-resistant structural steel plates
Corrosion-resistant steel refers to steel that is resistant to atmospheric corrosion. By adding a small amount of alloy elements such as iron, phosphorus, chromium, nickel, molybdenum, niobium, titanium, zirconium and vanadium to the steel, a protective layer is formed on the surface of the metal, thereby enhancing the corrosion resistance of the steel.
6. Patterned Steel Plate
A patterned steel plate is a type of steel plate with diamond-shaped or oval-shaped protrusions on its surface. Its specifications are indicated by its own thickness (excluding the thickness of the protrusions).
II. High-quality Medium-thick Plates:
1. High-quality Carbon Structural Steel Hot-Rolled Medium-thick Plates
High-quality carbon structural steel hot-rolled medium-thick plates are referred to as carbon structural steel thick plates. They are made of high-quality carbon structural steel and are produced through hot rolling. They can also be delivered in annealed, normalized, or tempered conditions.
2. High-quality carbon hot-rolled thick steel plates for automobile manufacturing
The high-quality carbon structural steel used for automobile manufacturing is made of high-quality carbon structural steel and is produced through hot rolling. Depending on the different production methods and depths, it is classified into three types: deep drawing (S), ordinary drawing (P), and cold bending forming (W).
3. Carbon tool steel thick plates
These carbon tool steel thick plates are made of carbon tool steel and are produced through hot rolling. They have good cold and hot processing properties, high hardness and ductility, low production cost, and wide applications. The main disadvantages are poor heat hardness and poor quenching and tempering properties. They are generally delivered in annealed or high-temperature tempered states.
4. Alloy structural steel thick plate
The alloy structural steel thick plate is made of alloy structural steel and is produced through hot rolling.
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