Timken's seamless mechanical tubing is produced in most standard carbon, alloy and intermediate alloy grades, as well as non-standard grades. The rotary forging process provides a refined and uniform grain structure along with greater strength and ductility.

Timken seamless steel tubing can largely be classified as either mechanical or pressure tubing. Mechanical tubing is typically used as the raw materials for machined components. Compared to solid forms, tubing greatly reduces the machining required. Timken is one of the world's largest manufacturers of seamless steel tubing for mechanical applications.

Pressure tubing conveys fluids or gases under pressure, including tubes for steam and nuclear power generation, and for chemical and plastics industries. The tubing is made to resist high or low temperatures, high pressures, oxidation and corrosion, and meets standard ASTM specifications.