The size of a steel coil is typically expressed through three main measurements; width, thickness, and length.

　　Width – refers to the measurement from one edge to the other across its flattened surface. This is a vital measurement, as it determines the maximum distance between the edges of the sheet (or if the coil needs to be slit).

　　Thickness – indicates the depth of each “layer” of the steel coil, or the thickness of the sheet once unrolled. Can be measured in gauges or inches.

　　Length – the full length of the steel coil when completely unrolled. This is important to determine how many coils a project may need, or as an indicator of a coil’s weight.

　　Other measurements you might see include:

　　Outside Diameter (OD) – refers to the measurement across the outer edges of the coil. It plays a crucial role in determining how the coil fits within specific machinery or storage facilities and affects transportation logistics due to its size and weight.

　　Inside Diameter (ID) – indicates the measurement across the inner core of the coil. This measurement is important for compatibility with machinery and equipment that require a specific inner diameter for efficient operation. Additionally, it influences the stability and handling of the coil during transportation and storage.