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Re: Extreme size welding
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Posted by mjbrown on October 30, 2006 at 05:22:52 from (132.236.155.95):
In Reply to: Extreme size welding posted by 135 Fan on October 30, 2006 at 01:34:14:
I met a distant relative at a picnic a few years ago who is a retired welder. He used to weld steam pipes during nuclear power plant construction. These pipes had 5" thick walls. They used preheater collars on either side of the joint and the first pass was tig welded, then they went to work with sticks. I think he said it took a couple of days to weld a joint. Needless to say, no inclusions allowed.
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