Hot Rolled Coil Classification and Main Product Introduction

Hot rolled coil is a product primarily made from steel as the main raw material. This type of product is generally produced after heating, and hot-rolled coil is also known as steel strip coil, a rolled material made from steel. Hot rolled coils have high strength and excellent toughness, making them highly processable materials. This material can be used to manufacture various steel plates and steel strip products.

So, what are the classifications of hot-rolled coil? Let’s explore what hot-rolled coil is.

Overview

Hot-rolled coil is made from slab (mainly continuous casting slab) as the raw material, heated and processed into steel strips by roughing and finishing mill units. The hot-rolled coil, coming out from the last stand of the finishing mill, is cooled to the set temperature through laminar flow cooling. It is then coiled into steel strip coils by a coiler. After cooling, the steel strip coils are processed into steel plates, leveled coils, and longitudinally or transversely cut steel strip products through different finishing operations lines (flattening, straightening, cross-cutting or longitudinal cutting, inspection, weighing, packaging, and labeling) according to different user requirements. In simple terms, a piece of steel slab, after heating (similar to the red-hot steel block seen on TV), undergoes several rolling processes, is then edge-cut and straightened to become a steel plate. This process is called hot rolling. Due to the excellent performance of high strength, good toughness, easy processing, and good weldability of hot-rolled steel plate products, they are widely used in manufacturing industries such as ships, automobiles, bridges, buildings, machinery, and pressure vessels. With the increasing maturity of new technologies for controlling hot-rolled size accuracy, plate shape, surface quality, and the continuous introduction of new products, hot-rolled steel plates and strip products have become increasingly widely used and competitive in the market.

Hot Rolled Coil
Hot Rolled Coil

Product Classification

Hot-rolled steel plate products include steel strips (coils) and steel plates cut from them. Steel strips (coils) can be divided into direct rolled coils and finished coils (divided coils, leveled coils, and longitudinally cut coils).

Main Products

Hot-rolled steel can be classified based on its material and performance into ordinary carbon structural steel, low-alloy steel, and alloy steel. According to its use, it can be divided into steel for cold forming, structural steel, automotive structural steel, corrosion-resistant structural steel, mechanical structural steel, welding gas cylinders, and pressure vessel steel, pipeline steel, etc.

This is an introduction to hot-rolled coils. Do you now understand what hot-rolled coils are? Are you familiar with their classifications? Hot-rolled coils have various classifications, including newly added coils and steel strip coils. They can be cut both transversely and longitudinally. Hot-rolled coils can be further classified into cold forming steel, structural steel, automotive structural steel, and low-alloy steel. The production process of hot-rolled coils is relatively simple, usually using an urgent production approach, making it a material that can be produced on a production line.

Albert Turner

Albert Turner is an experienced steel content writer with over 5 years of experience creating content related to the steel industry. Albert has solid professional knowledge of steel and can explain all aspects of steel production, processing, application and other aspects in a simple and easy-to-understand manner. He is familiar with various steel standards and specifications and can tailor content to the needs of his target audience.