How to Repair Rusted Plumbing Pipes

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If you have metal pipes such as iron in your house, then it is possible at some point you will deal with a rust. When a pipe rusts through, or gets to the point where it needs to be replaced, you can do the repair yourself with a few basic supplies. These pipes can be difficult to remove when rust locks up the threads.

Things You'll Need

  • Hacksaw
  • Wrench
  • Pipe thread cutter
  • New pipe
  • Thread tape
  • Unscrew the pipe between two threaded fittings to replace with a new pipe. If it is rusted shut, use a rust busting liquid to loosen it.

  • Tighten a wrench down on the pipe and twist to loosen it.

  • Measure the pipe and obtain a new section with threads that is the same length. If one isn't available, get one that is longer and cut off one end with a hacksaw or wet saw that cuts metal.

  • Make threads on the end with a hand pipe threader. Attach it to the end and crack to cut the threads into the pipe. Squirt cutting oil on the pipe to aid in the process.

  • Wrap thread tape around the new pipes threads before screwing it in. This will help prevent leaks. Screw the pipe into the fittings.

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