That's the standard for solvent cement for ABS. Section 705.7.2 Solvent Cement Joints (for PVC) says the following, among other stuff: So as long as you use the right purple primer, you can also glue ...

Make an improvised guide by screwing together scraps of 2×4. Saw using a handsaw with a blade that’s 3 or 4 inches wide. Note: Square pipe ends fit snugly into the fittings, allowing plenty of contact ...