40 mm metal is a type of construction aggregate with a particle size of approximately 40 millimeters. This larger aggregate is commonly used in various construction projects, similar to the way other aggregates are used in concrete production and other applications.
Concrete made with 40 mm metal is commonly used in projects that require a high degree of strength, such as in the construction of foundations, heavy-duty pavements, retaining walls, bridge components, and other structural elements.