How to Cut Galvanized Steel Pipe

Steel pipes.
What You'll Need
Galvanized steel pipe
Metal saw
Carpenter's measuring tape or ruler
Pipe threader

Galvanized steel pipe is still the material of choice for installing water lines. Its tensile strength makes it ideal for freezing temperatures and high water pressure. Replacing damaged water pipes in your home is a cinch if you know how to cut the pipe. Not only will you save some money by not hiring a plumber, but you will also be assured that your damaged galvanized pipe will not leak precious water while you wait for the plumber to arrive. Here are the steps you need to follow to cut galvanized steel pipe.

Step 1 - Put Safety First

Put on work gloves to make sure you don’t accidentally cut yourself while working. Wear plastic goggles to avoid small metal bits getting into your eyes. Even if you are working at home, wear protective shoes: a cut galvanized steel pipe falling and hitting your toes can cause a trip to the hospital.

Step 2 - Check the Measurement of the Pipe

Pipes come in different sizes, so take the measurement of the old pipe and make sure you have the same size for the one you are going to cut. Using the measuring tape, note the length of the new pipe you need. Exact measurements are essential; you don’t need allowances on any end of the cut pipe. Don’t forget to include the part where you need to put a thread when making your measurements. Threading should be about an inch in length. There should be an existing coupling so you can insert the end of the measuring tape in there to get the length of the thread.

Step 3 - Get the Pipe Ready for Cutting

Wrap a cloth around the part of the pipe you will clamp on. This prevents the pipe from slipping while you are cutting. Place the pipe securely in between the clamp and tighten the knob so the clamp will bite the pipe. Position the pipe with the measurement markings facing upward so you can see them without bending over.

Step 4 - Cut the Pipe

If you are cutting a rather long pipe, make sure you prop the end on a stool or table. This ensures the galvanized steel pipe will not bob up and down with the sawing motion. If it does, it will make sawing harder because the pipe will cinch the saw. Place the metal saw on the marking and make precise back-and-forth movements with it. Let the saw and your arm’s weight nick the galvanized metal pipe. Do not push down, or else the saw may slip on the surface of the pipe or it can snap, either one a dangerous thing. Place the end of the cut galvanized steel pipe into the pipe threader and thread appropriately so it will fit into the existing coupling.