Classification And Application Of Hot Rolled Coil
2024-03-16
Hot rolled coil is a strip of steel rolled by roughing mill and finishing mill after the slab (mainly continuous casting billet) is heated by heating furnace (or soaking furnace). Hot rolled coil The hot strip from the last finishing mill is cooled to the set temperature by laminar flow, which is then rolled into hot rolled strip by the coiler. A hot rolled coil includes a steel strip (coil) and a steel plate made by cutting thereof. Steel strip (coil) can be divided into straight coil and finished coil (split coil, flat coil and longitudinal cut coil) Hot rolled coil generally includes medium thickness wide steel strip, hot rolled thin wide steel strip and hot rolled sheet. The medium thick and wide steel strip is the most representative variety, and its output accounts for about two-thirds of the total production of hot rolled coil. The subject matter of the hot rolled coil futures contract to be launched on the Shanghai Futures Exchange is medium thick and wide steel strip. Medium thickness wide steel strip refers to the thickness > 3 mm and less than 20 mm, 2600 mm in width, produced by continuous wide strip hot mill or stopliner mill, etc. Hot rolled thin wide steel strip refers to the thickness < 3 mm, 2600 mm width, rolling and delivery of steel strip produced by continuous wide strip hot mill or stopliner mill or thin slab rolling equipment. Hot rolled sheet refers to the thickness < 3mm sheet steel. Hot rolled sheet is usually produced by continuous wide strip mill, thin slab continuous casting and rolling and other equipment. Hot rolled coil can be divided into ordinary carbon structural steel, low alloy steel and alloy steel according to the different materials and properties. According to its different uses, it can be divided into cold forming steel, structural steel, automobile structural steel, corrosion resistant structure steel, mechanical structure steel, welding gas cylinder and pressure vessel steel, pipeline steel and so on. Hot rolled coil products with high strength, good toughness, easy processing and good weldability and other excellent properties, are widely used in cold rolled substrate, ships, automobiles, Bridges, construction, machinery, oil pipelines, pressure vessels and other manufacturing industries
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