TinnerFlow™1st YearGREEN · Field ReferenceWeak Single-Crimp Slip Joint
Round slip joints need an even crimp around the full pipe end. Shallow random dents will not give the fitting a solid mechanical bite.
You are prepping round pipe joints on the ground by crimping the raw end of a cut pipe to make it fit into an elbow collar. You use a single-point hand crimper and make shallow, uneven dents that slip right apart under pressure.
Round slip joints need an even crimp around the full pipe end. Shallow random dents will not give the fitting a solid mechanical bite. The likely recovery is to check the condition, correct prep/setup if it is within your assignment, and bring the foreman clean information before the work creates rework overhead.
Do not use a few shallow dents and expect the joint to hold under vibration.
Uniform crimps help the joint slide home, stay round, and hold pressure.
Final direction belongs to the foreman, approved drawings/specs, manufacturer instructions, pressure/material schedule, employer policy, and AHJ/code requirements.