How to Expand Exhaust Tubing Step 1 – Bend the Tubes. After you get your angles figured out as to where you want the pipes bent, either bend them yourself or have them bent. Step 2 – Expand the End. You can get a cheap expander at discount tool shops for one-time use. Step 3 – Use the Expander. Step 4 – Adjust for the Weather. Click to see full answer. Subsequently, one may also ask, how do you bend an exhaust pipe at home? Bending the exhaust tube yourself is a delicate process but entirely feasible with the right equipment. Fill the pipe with sand to prevent crimping when you bend it. Step 1 – Design Pipe. Step 2 – Create Squash Pipe. Step 3 – Flatten End of Bending Pipe. Step 4 – Weld Squash Pipe to Exhaust Pipe. Step 5 – Heat Pipe and Bend. One may also ask, what is Pipe Expander? Product Overview A simple wrench turn expands pipe for exhaust system repair and installation. This pipe expander flares one end of the pipe for easy insertion. Works with all 1-1/2 in. to 2-5/16 in. thin wall pipes. Just so, what kind of pipe can I use for exhaust? Stainless steel is the most expensive choice. It is also more difficult to bend and weld. There are different grades of stainless steel. 409 and 304 are the most popular grades used in exhaust parts.What is exhaust tail pipe?The Tail Pipe is part of your car’s exhaust system. Like a chimney on a house, it is designed to release exhaust away from the vehicle and into the air. Exhaust pipes connect to the muffler and are often attached to the rear end of the car with a bracket.