How to cut galvanized steel

Written by aaron ratliff
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How to cut galvanized steel
Cutting galvanised metal requires special tools to ensure smooth and precise cuts. (background metallic image by Galina Moiseeva from

Galvanised steel has been in use in the United States since 1870, and can be found in most houses that were constructed prior to the 1950s. Galvanised steel is still a popular option for roofing and siding on commercial and residential buildings. When cutting galvanised steel, it can be challenging to produce a smooth clean-cut edge. With the proper tools, you can cut both galvanised pipes and sheets with precision.

Skill level:

Things you need

  • Pipe vice or solid bench vice
  • Rotary pipe cutter
  • Steel reamer
  • Circular saw fitted 7 1/4 -inch fibre blade
  • Safety glasses
  • Gloves

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  1. 1

    Secure the pipe in either a pipe vice or a solid bench vice.

  2. 2

    Place the rotary pipe cutter on the galvanised pipe, centring the line you need to cut with the blade of the cutter.

  3. 3

    Apply cutting oil and tighten the knurled handle of the pipe cutter until the blade touches the pipe.

  4. 4

    Turn the cutter in a circular motion, tightening the knurled handle with each revolution, until the pipe has been cut. Add oil as needed during the process.

  5. 5

    Smooth any rough edges with a steel reamer.

  1. 1

    Clamp the sheet of galvanised metal securely using a bench vice with your guide lines facing up.

  2. 2

    Use a circular saw fitted with a 7 1/4-inch fibre blade to cut the galvanised metal, following your guide lines.

  3. 3

    Smooth any rough edges with a steel reamer.

Tips and warnings

  • Gloves and protective eyewear should be worn at all times when cutting galvanised metal.
  • Always wear a proper mask to protect your airways when cutting galvanised metal with a circular saw or any other powered device.

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