Steel is not a single product. There are more than 3,500 different grades of steel with many different physical, chemical, and environmental properties.

Approximately 75% of modern steels have been developed in the past 20 years. If the Eiffel Tower were to be rebuilt today, the engineers would only need one-third of the steel that was originally used.

Modern cars are built with new steels that are stronger but up to 35% lighter than in the past.

Iron is made by removing oxygen and other impurities from iron ore. When iron is combined with carbon, recycled steel and small amounts of other elements it becomes steel.

Steel is an alloy of iron and carbon containing less than 2% carbon and 1% manganese and small amounts of silicon, phosphorus, sulphur and oxygen.

Steel is the world’s most important engineering and construction material. It is used in every aspect of our lives; in cars and construction products, refrigerators and washing machines, cargo ships and surgical scalpels.

Most steel processing is done by pressure processing, which causes the processed steel (billets, ingots, etc.) to undergo plastic deformation. According to the different processing temperatures of steel, it can be divided into cold processing and hot processing. The main processing methods for steel are:
· Rolling: The metal billet is passed through the gap between a pair of rotating rollers (various shapes). Due to the compression of the rollers, the material cross-section is reduced and the length is increased. This is the most commonly used production method for steel, mainly used to produce profiles, plates, and pipes. It is divided into cold rolling and hot rolling. · Forging: A pressure processing method that uses the reciprocating impact force of the forging hammer or the pressure of the press to change the billet into the shape and size we need. It is generally divided into free forging and die forging, and is often used to produce large-section materials, billets, and other materials with larger cross-sectional dimensions. Drawing: It is a processing method that pulls the rolled metal blank (profile, tube, product, etc.) through the die hole to reduce the cross-sectional area and increase the length. Most of them are used for cold addition.
·Extrusion: It is a processing method that puts metal in a closed extrusion cylinder, applies pressure at one end, and squeezes the metal out of a specified die hole to obtain a finished product of the same shape and size. It is mostly used in the production of non-ferrous metal materials.

Corrosion and Rust Resistance: The main advantage of galvanized steel coil is its good corrosion and rust resistance. The iron in steel is a very active chemical and is prone to rust. However, the addition of zinc acts as a protection and buffer between the steel and moisture or oxygen. Therefore, the zinc coating acts as a barrier against external aggression and will sacrifice itself to protect the steel underneath.

Lifespan: In the case of galvanizing, the lifespan of GI coils in working environments is well over 50 years, and can last for more than 20 years under severe water exposure. Cost: First of all, the overall cost of galvanizing is lower compared to other coatings. In addition, galvanized steel coils are ready for use after delivery. It does not require additional surface treatment, inspection, painting or coating.

Durable and Reliable: Hot-rolled or cold-rolled coils are often used as the substrate for galvanized steel. The steel is strong and the zinc coating is strong and durable.

Complete Protection: Every inch of the galvanized steel coil is protected, including grooves, sharp edges and hard-to-reach areas, making it less susceptible to damage. Easy to inspect: The simple design of the product structure makes it easy to evaluate with the naked eye and use simple non-destructive thickness testing methods.

Carbon steel is actually iron. "Iron" is a name relative to other types, used to distinguish copper, aluminum, lead, etc. In fact, iron is steel. In the past, traditional sayings generally divided iron into "pig iron" and "wrought iron". Pig iron is called iron, and wrought iron is called steel. "Carbon steel" is a classification of steel, which is divided into two categories: "carbon steel" and "alloy steel".

Cold-rolled steel is low-carbon hot-rolled steel that has been rolled at room temperature, below its recrystallization temperature. The steel is then cleaned of oxide scale and finished in a specific series of rolling to just over the desired thickness, heating to controlled temperatures, and final rolling to the desired thickness. This produces steel with a close thickness tolerance (+/-.0015” or better) and a wide range of controlled surface finishes. The process of cold rolling increasing the steel’s strength and hardness, while decreasing its ductility. Not only can you achieve improved mechanical properties, cold rolling provides more control over the shape and final dimensions of the product.