Hot Rolled Steel Sheet
Hot Rolled Steel Sheet One of the most widely used types of steel sheets is hot-rolled steel sheet (commonly referred to as black sheet in the market). This type of sheet is informally known as “black sheet” due to its dull, non-reflective surface appearance, which results from the formation of mill scale during the hot-rolling process. Its typical surface color is matte gray. Hot-rolled steel sheet (commonly known as black sheet) is produced through the hot rolling process and should not be confused with hot-dip galvanized steel.This type of steel is typically manufactured from grades such as ASTM A36 and ASTM A1011. During production, steel slabs are heated in a reheating furnace to temperatures of approximately 1,200–1,280°C.In the next stage, the heated material passes through a series of rollers where the rolling process reduces its thickness to the required dimensions. During this stage, descaling is performed to remove surface scale (iron oxide) formed at high temperatures.Finally, after passing through finishing stands and a run-out cooling table, the steel strip is coiled and formed into hot-rolled steel coils. Applications of Hot-Rolled Steel Sheet (Black Sheet)Hot-rolled steel sheet (black sheet) is used in various industries. Some of its most common applications include the following:automotive body structureautomotive floor pan steel sheeWelded pipesTypes of structural steel sectionsTanker fabricationship constructionIndustrial profile
Industrial profile Industrial profiles, also known as heavy profiles, are made from various materials and are used in both construction and industrial applications. Industrial profiles fall under the category of built-up (compound) profiles and are formed by combining hot-rolled and cold-formed sections. These profiles are produced in a variety of shapes, each designed for a specific use. Key advantages of industrial profiles include low weight, high strength, and durability—remaining resistant to deterioration over time, even in moist environments or near water. Industrial profiles are used in large steel structures, including the construction of bridges, large-scale advertising billboards, military industries, and the manufacturing of industrial equipment, among others. They are also used in structures built in factories and production workshops, where different parts require steel columns and box sections.