The Difference Between Round Bar, Drill Rod and Shafting

Drill Rods Drill rods are manufactured from tool steel whose diameter has been ground to a tight tolerance. In addition to being typically round, drill rods can also be fabricated in square shapes. As well as being tempered, they are usually prior to being machined. 

Round Bars There are several types of round bars, including hot-rolled steel, cold-rolled steel, stainless steel, alloy steel, aluminum, brass, and even a few other metals. The size of the device can vary from fractions of an inch to 24 inches in some cases. Round bars come in a variety of materials. Here are some basics:

Shafting Round bars made from high-quality steel and precision turned ground are known as shafting or 'Turned Ground and Polished' shafting. The surfaces are polished to ensure that they are flawless and perfectly straight. With extremely close tolerances on surface finish, roundness, hardness, and straightness, the manufacturing process ensures a long service life and reduced maintenance costs.