

Tube size dies are for bending tube Pipe will not fit inside of a tube die.

The die profile is designed and cut to maximize strength of the wall as well as prevent the collapse of the outside wall, and prevent the inside of the bend from kinking. Tube benders typically draw the tube around a die. While you might find tube bender manufacturers offer up pipe sized dies, the two machines are actually different in their standard designs. You might also see a reference for "steam pipe manifold" when you search around. Pre-made pipe elbows (known commonly as a "Weld El") make excellent tight radius bends for manifold construction. Most turbo manifolds are constructed using 1.5 inch Sch. The most common place to see pipe used in the automotive performance industry is on turbo manifolds. Pipe is NOT used for roll cage or chassis construction. Smaller schedule sizes will have a larger outside diameter. A 1.5 inch Schedule 80 wall has an actual inside diameter of 1.5 inches. Each wall thickness is referenced as a "schedule" to identify it. Pipe is measured on a nominal inside diameter. The measurement of the outside diameter of the tube is the tube size as well as the actual measurement of the wall thickness.

It is very common for people to confuse the two materials. Functions of the bender, tools, and even the dies themselves have key points you should know before you actually get to bending. There are many important point to know and understand before you get to bending tubes.
