Mechanical tubing and structural tubing are two types of tubing used in various industries for different applications. While they may appear similar at first glance, there are significant differences between them that affect their performance and suitability for specific uses.

Mechanical tubing is a type of steel tubing that is used primarily for mechanical and engineering applications, such as the manufacturing of automotive parts, hydraulic cylinders, and industrial machinery. It is designed to withstand high stresses, pressures, and torsional forces, making it ideal for use in applications where strength and durability are critical. Mechanical tubing is typically manufactured to tight tolerances and is made from a variety of materials, including carbon steel, alloy steel, and stainless steel.

Structural tubing, on the other hand, is a type of steel tubing that is used primarily for structural applications, such as the construction of buildings, bridges, and other large structures. It is designed to support heavy loads and resist bending and twisting, making it ideal for use in applications where stability and structural integrity are critical. Structural tubing is typically made from carbon steel and is available in a variety of shapes, including round, square, and rectangular.

One of the main differences between mechanical and structural tubing is their manufacturing process. Mechanical tubing is typically cold-drawn or hot-finished, which gives it a uniform wall thickness and a smooth, polished surface. This makes it ideal for use in applications where aesthetics and precision are important. Structural tubing, on the other hand, is typically produced by rolling or extruding, which gives it a variable wall thickness and a rough, textured surface. This makes it ideal for use in applications where strength and stability are more important than appearance.

Another key difference between mechanical and structural tubing is their dimensional tolerances. Mechanical tubing is typically manufactured to very tight tolerances, with precise outside diameters and wall thicknesses. This makes it easier to machine and work with, and ensures that it will perform reliably in high-stress applications. Structural tubing, on the other hand, has looser dimensional tolerances, which makes it more affordable and easier to manufacture in large quantities.