Overheated a 12 inch flange joint for 20 years before a pipefitter set me straight

I always thought you needed to go big on the rosebud to get the flange hot enough to pull bolts, but after I warped a 6 inch blind on a job at the refinery last Tuesday, this old timer showed me his trick with two smaller torches and a temp stick. He had me running a 200 degree difference between the inside and outside diameter which cracked my whole approach open. Anyone else have a go-to method for heating flanges evenly that doesn't risk warping them?

2 comments

2 Comments

paigem4526d ago

Yeah, that temp stick trick is gold. I started using two smaller torches to keep the heat zone tight and it cut my warping issues way down.

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caleb_thomas9326d ago

Buddy tried that after watching a YouTube video and said it helped a ton with his thin stock.