Leading Steel Plate Manufacturers

Metal goods are frequently made using steel plates. Steel plate is manufactured in various thicknesses and widths, then cut and welded together to form the finished item. There are various kinds of plates, including high-carbon and stainless steel plates. Some kinds of plate steel are used to make structures, while others make both commonplace objects like wood furnaces and less commonplace items like ship hulls. Flat steel is a common name for a steel plate. Read More…

Steel Plates Steel plates are flat sheets of steel that are used in an extensive variety of applications across industry, commerce and in consumer products contexts.

At Mainline Processing, we utilize our own facilities and equipment to meet our customers’ needs with an organized and growth-driven model. We stock large quantities of material in our inventory so that our customers can take advantage of purchasing opportunities where they can feel confident that they have the proper steel for the proper end use.

Mainline Metals Inc. $$$

Norfolk Iron & Metal is a dedicated and trusted leader in the steel service center industry. For years we have been providing dependable service and products. We strive to have the highest quality products in the industry while continuously improving and expanding.

Norfolk Iron & Metal $$$

SG Steel is a steel and metal products procurement, supply, processing and fabricating company who serves numerous industries such as construction, energy, engineering, and more. With more than 70 years of experience in the steel trading industry, we can deliver wide range of steel products in unprecedented speed and complexity. Products include plates, beams, and industrial bars. Contact us...

SG Steel Ltd. $$$

American Heavy Plates is an innovative steel plate manufacturer. We imbue our process with technical expertise, efficient supply-chain management, and a quality process that ensures your needs come out on top. Our services include milling, drilling, flame-cutting, annealing, machining, and more.

American Heavy Plates $$$
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placeholder image Mainline Metals Inc. Norfolk Iron & Metal SG Steel Ltd. American Heavy Plates

There are several techniques to shape steel plates the most popular being hot rolling. Hot rolling occurs above the steel’s recrystallization temperature. Recrystallization is when a material's structure changes to the point where it loses rigidity and becomes ductile. In other words, steel can become easily formable when sufficiently heated. After recrystallization, the steel is compressed into a flat shape under a succession of rollers. This procedure provides the steel with shape, strength, and longevity.

Steel Plates

It is also possible to cold roll steel plates, which is very similar to hot rolling except that no heat is applied to the steel during the cold rolling process. As a result, the possibility of oxidation decreases, and the material receives compressive stress, strengthening it. However, hot rolling causes fewer deformational stresses in the material compared to cold rolling. Other plate-forming services include milling, deburring, straightening, shot or sand blasting, heat treating, stress relieving, annealing, normalizing flame cutting, and special testing. In steel service facilities, pickling, a process that uses sulfuric or hydrochloric acid to clean or remove impurities from steel, is frequently employed on steel plates.

Types of Steel Plates

Steel plate comes in various varieties, including stainless steel (also known as Stainless Steel 304), high-carbon, low-carbon, and alloy steel plates. These steel plates have various purposes; some are domestic goods, while others are much larger, such as buildings or tanks. Standard grade steel used in structural plates is used for reinforcing plates and building girders.

A flat steel plate is fastened to a concrete foundation using anchor bolts, frequently done to secure steel beams. The steel beam is bolted or welded to the plate to establish a firm base upon which to build. The width of the plate is used to distribute the building's load.

Low-carbon steel is often used for structural-grade plates. This steel is easy to drill and shape to meet construction needs. A36 grade steel is the used for a structural steel plate. This plate steel type is used to construct heavy machinery like bulldozer chassis and earth mover booms. Other specialist plate steel grades exist, such as marine, armor, and bullet-proof grades.

Steel Plates in Ship Construction

Applications of Steel Plates

Construction Applications

Steel plates have several uses in the building sector. They are particularly prevalent while building warehouses, buildings, and bridges. Large commercial structures like stadiums and airports are also built using steel plates. In addition, bridges and building foundations can benefit from steel plates.

Steel Plate Anchor for Construction

Military Applications

Steel plates are often used to fortify military structures and vehicles. They are frequently seen in military vehicles such as jeeps, tanks, trucks, helicopters, planes, and ships. They are also employed when testing ammunition and weaponry. Steel plates are used in some capacity by every component of the armed forces.

Automotive Applications

Many cars today contain steel plates on their chassis. They are vital to keeping drivers and passengers safe in the case of crashes because of their strength. In addition to being reasonably strong, steel plates can also be lightweight, helping cars run more efficiently.

Advantages of Steel Plates

Steel plates resist rust and wear. They are made in a far wider range of thicknesses than normal sheet steel. A steel plate is ideal in applications requiring an extremely strong construction.

Steel plates can bear tremendous strain from the worst environmental factors. Although steel plates are mainly used for bracing and reinforcing, it has been demonstrated that plate steel possesses a high degree of flexibility.

Choosing the Proper Steel Plate Manufacturer

To make sure you have the most positive outcome when purchasing steel plates from a steel plate manufacturer, it is important to compare at least 5 companies using our list of steel plate manufacturers. Each steel plate manufacturer has a business profile page that highlights their areas of experience and capabilities and a contact form to directly communicate with the manufacturer for more information or request a quote. Review each steel plate company website using our patented website previewer to get an idea of what each company specializes in, and then use our simple RFQ form to contact multiple steel plate companies with the same quote.

Steel Plate Informational Video


Steel Service Centers Power Pages

Aluminized Steel

Aluminized Steel

Aluminized steels are steels that have been hot-dip coated with pure aluminum or aluminum-silicon alloys. This hot-dip coating process is termed hot-dip aluminizing (HAD)...

Steel Service Centers

Steel Service Centers

Steel service centers are companies that specialize in procuring steel directly from mills and manufacturers and supplying them to the customers. They are fundamental to the steel supply chain...



Copper is a ductile, malleable, and reddish-gold metal with the capacity to effectively conduct heat and electricity. Brass and bronze, two commonly used alloys, are created when copper is combined with...

Stainless Steel Grades

Stainless Steel Grades

Stainless steel grades each consist of carbon, iron, 10.5%-30% chromium, nickel, molybdenum, and other alloying elements. It is a popular metal used in various products, tools, equipment, and structures that serve in many industrial, commercial, and domestic applications...

Stainless Steel Fabrication

Stainless Steel Fabrication

Stainless steel can be fabricated using any of the traditional forming and shaping methods. Austenitic stainless steel can be rolled, spun, deep drawn, cold forged, hot forged, or stippled using force and stress...

Titanium Metal

Titanium Metal

Titanium metal, with the symbol Ti, is the ninth most abundant element in the earth‘s crust. It does not occur in large deposits, yet small amounts of titanium are found in almost every rock...

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