Industries Served


Kloeckner Metals is proud to supply the metals that power the North American aggregate industry.

Aggregate image

The Aggregate Industry

The aggregate industry, also known as the construction materials industry, is a significant contributor to the economy of the United States. According to the National Stone, Sand and Gravel Association (NSSGA), the industry generates over $30 billion in annual revenue and employs more than 150,000 people. The industry is also a major consumer of energy and natural resources, using over 260 million tons of crushed stone, sand, and gravel each year. Additionally, the industry is responsible for producing a significant portion of the infrastructure and buildings in the United States, including roads, bridges, airports, and buildings. Kloeckner Metals is proud to supply the North American aggregate industry,

Products Serving the Aggregate Industry

Services Provided to the Aggregate Industry


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Special Equipment Serving the Aggregate Industry

Frequently Asked Questions

  • What is the aggregate industry?


    The aggregate industry refers to the business of extracting, processing, and selling construction materials such as crushed stone, sand, and gravel. These materials are used in the construction of roads, buildings, and other infrastructure projects. The industry may include quarrying, mining, and related transportation and processing activities.

  • What metals are used in the aggregate industry?


    The aggregate industry typically uses a variety of equipment and machinery in the extraction and processing of construction materials such as crushed stone, sand, and gravel. These machines often use metal components such as steel and iron, which are strong and durable materials that can withstand the demanding conditions of quarrying and mining operations. Some examples of equipment that may be used in the aggregate industry include crushers, screens, conveyors, and excavators, all of which typically have metal parts. Additionally, many aggregate processing facilities also use metal structures such as buildings, storage tanks, and conveyor systems.

  • What equipment is used to extract aggregate?


    There are a variety of equipment used to extract aggregate, depending on the type of deposit and the location of the quarry. Some examples of equipment used in the aggregate industry include:

    • Excavators: Used to remove overburden and extract raw material from the ground.
    • Front-end loaders: Used to load material into trucks or onto conveyors.
    • Bulldozers: Used to move large amounts of overburden or to level the ground in preparation for mining.
    • Dump trucks: Used to transport raw material from the quarry to processing plants or construction sites.
    • Crushers: Used to reduce the size of the raw material. There are different types of crushers such as jaw crusher, cone crusher, impact crusher, and hammer mill crusher.
    • Screens: Used to separate the crushed material into different sizes.
    • Conveyors: Used to transport the crushed material from one location to another.
    • Wash plants: Used to clean the crushed material and remove any unwanted materials.
    • Drills: Used to create holes for blasting or to extract core samples.

    These are just a few examples of the equipment used in the aggregate industry. There are many other types of equipment that are specific to different types of mining operations, such as underground mining or dredging.

  • What metal grades go into the heavy equipment that powers the aggregate industry?


    Heavy equipment, such as construction machinery, mining equipment, and agricultural equipment, typically use a variety of metal grades. The specific metal grades used can vary depending on the type of equipment and the specific application. Some commonly used metal grades in heavy equipment include:

    • Carbon steels: These are low-cost, strong, and durable steels that are widely used in heavy equipment. They can be further divided into low, medium, and high carbon steels depending on the carbon content.
    • Alloy steels: These are steels that contain other elements, such as chromium, nickel, and molybdenum, to improve their properties. They are used in heavy equipment for their high strength, toughness, and resistance to wear and corrosion.
    • Tool steels: These are high-carbon, high-alloy steels that are used in heavy equipment for their excellent wear and abrasion resistance. They are often used for parts that are subject to high levels of stress and wear, such as gears and cutting edges.
    • Stainless steels: These are steels that contain a high amount of chromium, which gives them excellent corrosion resistance. They are used in heavy equipment for parts that are exposed to harsh environments, such as mining and marine equipment.
    • Aluminum and titanium alloys: These are lightweight metals that are used in heavy equipment to reduce weight and improve fuel efficiency. They are often used in parts such as engine components and structural components.

    It’s worth noting that most heavy equipment manufacturers use a combination of different metal grades, depending on the specific requirements of the equipment and the application.

  • What metal processing services are commonly used to make equipment for the aggregate industry?


    Metal processing services that are commonly needed to make equipment for the aggregate industry include:

    • Fabrication: This involves cutting, bending, and shaping metal to create the desired parts and components of the equipment.
    • Welding: Welding is used to join metal parts together, creating a strong and durable connection.
    • Machining: This process is used to create precise and accurate parts, such as gears, shafts, and other components.
    • Painting and coating: Equipment used in the aggregate industry is often exposed to harsh conditions, so it is important to protect the metal from corrosion and wear. Painting and coating can provide this protection.
    • Assembly: After the individual parts have been created and prepared, they must be assembled to form the complete piece of equipment.
    • Testing and inspection: Finally, the equipment is thoroughly tested and inspected to ensure that it meets the required specifications and is safe to use.

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Additional Industries Served

In addition to serving the aggregate industry, Kloeckner caters to a wide range of related industries including the heavy equipment and construction, oil & gas, and mining sectors. Our mission is to be a full-line service center that offers customers unparalleled product scope, full logistical support, and superior customer service across the metals industry.
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