cutting and welding hollow iron|90 degree hollow iron|secret technique of old welder

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cutting and welding hollow iron.
90 degree hollow iron.
The following is a trick for cutting and welding hollow iron. cutting and welding 90 degree hollow iron.
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There is a good chance that by not having something to keep it square it would have moved out of square. By the time you do the other 3 joints nothing would be square or flat

africanhistory