Pipe Flange Aligners

The Curv-O-Mark Flange Aligner Base provides a stable magnetic platform for squaring and aligning - with two 25-pound pull cast-in magnets for holding in flat horizontal or vertical positions. The base is notched at either end for centreline alignment and accepts legs from standard or combination squares.

Pipe Flange Aligner FAQs

What does a pipe flange aligner do?

A pipe flange aligner is a tool used to ensure a pipe flange is correctly oriented before welding. It inserts into the pipe bore, centres against the inside diameter, and allows the welder or fitter to set the bolt holes horizontally level and the flange face vertically level in one operation, removing the need for repeated checking and adjustment.

When would I use a flange aligner on site?

Flange aligners are used whenever a flanged pipe connection needs precise orientation before tack welding. This includes both new fabrication and pipe repair work where the flange bolt pattern must align with an adjacent flange or equipment nozzle. They're particularly useful in tight spaces or overhead positions where visual checking alone is unreliable.

What pipe sizes do Curv-O-Mark flange aligners cover?

The Curv-O-Mark Pipe Flange Aligner is adjustable for pipes and flanges from 3" to 12" in diameter. The Flange Aligner Base works with pipe from 1" upwards and pairs with standard or combination squares.