Painting Galvanized Pipe

In fact roughly 69 of steel is recycled in north america each year.

Painting galvanized pipe. The painting process is actually very straightforward because the surface of galvanized steel is relatively smooth and consistent. Beside this the zinc content of the galvanized coating reacts with paint s binder to create a film that causes the paint to peel source. I tried painting a galvanized steel door with the krylon h2o product it bubbles and peeled within 6 hours and absolutely. Galvanized steel is a great material to use for a variety of tools products and projects and it s environmentally friendly.

Process for painting galvanized steel. Spray painting galvanized metal do it yourself knowledge sep 16 2009 november 10 2010 at 11 26 am. An earlier visitor to the site reported that cleaning with a scrub brush and tri sodium phosphate took care of the prep work. Galvanized steel is coated with a thin layer of oil and passivator that protects it from water and weather damage.

That s great for preventing rust but it. Clean new pipes with a thinner or solvent and apply a primer. Joel w parham gainesville texas. Use water based paints made for metal.

To test for the presence of passivators sand down an inconspicuous spot on the finish and swab it and the surrounding area with copper sulfate diluted with water. Galvanized steel surfaces are sometimes treated with chemicals called passivators which protect the exterior from corrosion but can complicate painting. Galvanized water pipes are coated with zinc and oil. Alkyd and oil based paints may seem to stick at first but the oily layer eventually sheds the paint.

When painting galvanized steel all paint systems used should be specifically formulated for use on galvanized steel and applied in accordance with the paint manufacturer s recommendations. The oil will need to be removed before painting. How do you prep and paint galvanized pipe. Therefore it s important to follow the correct procedure when painting galvanized.