How to Get Rid of Rust on a Metal Sprinkler Pipe

Inspect the sprinkler line for signs of rust. Take note of areas that are discolored with red or orange tones, as this is a sign of rust.

Rub the area of the rust with a pad of fine steel wool in a smooth but firm back-and-forth motion. The steel wool will remove the bulk of the rust after several swipes.

Rub the area that you just cleaned with a fine-grit sandpaper. The sandpaper will polish the pipe and remove any surface pitting that allows rust to form. Vigorously scrub the pipe until it is smooth to the touch and there are no visible signs of rust.

Wipe the pipe with a clean rag and inspect the pipe again for signs of lingering rust. Remove any remaining rust by repeating the cleaning process.

Remove rust that may be present in small crevices of the pipe or plumbing fittings, or on the inside of a pipe with a stainless steel pipe brush. Use the bristles of the brush to firmly rub away signs of rust. If possible, tear off a small section of sandpaper and rub the inside of the pipe lip to remove fine particles of rust.