What is the primary form of workpiece material purchased from metal manufacturers in large, flat pieces?

The primary form of workpiece material purchased from metal manufacturers in large, flat pieces is plate stock. Plate stock is typically thicker and broader than sheet metal, making it suitable for applications where strength and durability are required, such as structural components or heavy machinery fabrication. It provides sufficient surface area for machining, welding, or other processing methods, effectively catering to various industrial needs.

Sheet metal, while also a flat form, is generally thinner than plate stock and is used for applications such as automotive body parts and appliances. Bar stock refers to long, solid lengths of metal that can be round or square and is used for different machining applications, often needing more shaping and machining than flat pieces. Tubing consists of hollow cylindrical shapes and is typically used in structural applications, plumbing, or conveying fluids and gases. Each of these forms has unique applications, but plate stock's specifications make it the primary choice for large flat pieces in manufacturing.