TinnerFlow logoTinnerFlow™
Apprentice Q&A · #094

How do I fix a round pipe that's been crushed during shipping so it fits together?

2nd YearField ModsGREEN · Learn / Reference

Use your hand seamers or a dedicated sheet metal pipe reamer crimper tool to carefully work your way around the deformed diameter edge, pulling the metal back out incrementally into a true circular radius. * If it resists, use a crimping tool to add slight crimps to the male edge to make it slide easily into the female pipe receptor.

Search Field RescueOpen in Q&A search

Plain-English answer

Use your hand seamers or a dedicated sheet metal pipe reamer crimper tool to carefully work your way around the deformed diameter edge, pulling the metal back out incrementally into a true circular radius. * If it resists, use a crimping tool to add slight crimps to the male edge to make it slide easily into the female pipe receptor.

Field checklist

Ask Foreman

Hey boss, quick learning check: How do I fix a round pipe that's been crushed during shipping so it fits together? Is this the method you want used on this job, or is there a project-specific standard here?

Open Ask Foreman

Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Related questions

#098 · What is the proper spacing for tek screws on a 24-inch round slip joint?2nd Year · Field Mods#092 · What's the formula for finding the throat radius of a standard 90-degree elbow?2nd Year · Field Mods#091 · How do I build an end-cap out of flat metal in the field?2nd Year · Field Mods#095 · What's the best way to modify a square-to-round transition if the VAV is off-center?2nd Year · Field Mods#100 · What is "oil-canning," and how do I cross-brake duct to prevent it?2nd Year · Field Mods#096 · How do I safely drill out spot welds to modify a factory fitting?2nd Year · Field Mods

Related Field Rescue routes

Spiral duct is out of round and the coupling will not seatField Rescue · Spiral, Round Duct & CouplingsWhat do I do when not identifying male/female end direction on spiral duct?Field Rescue · Spiral, Round & Oval Duct InstallWhat do I do when flex kinked around framing or pipe?Field Rescue · Flex Duct Connections & Supports

Related mistakes & recovery checks

#066 · Not properly forming a female end on duct so the joint won't pull apart2nd Year · Sheet Metal Work#067 · Cutting a round collar too large so it spins freely instead of gripping2nd Year · Sheet Metal Work#158 · Installing exposed architectural ductwork without protecting finished surfaces during rigging4th Year · Sheet Metal Work