Design - Part 4 - TWI - Backing strip

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An alternative to backgouging, or when access to the reverse side is not available, is to use a backing strip which will provide support for a fully penetrated root. Back strip support is a metal strip fixed by tack welding on the back side of Backing strip is generally required where the root gap is higher.

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Comments:

By Samuran - 05:44
We have used non metallic backing strips (ceramic as well as fibre glass) for welding of tanks and obtained excellent results. No back gouging.
By Dobar - 17:39
Unipop.info › FigureUse-Of-Backing-Strips-In-Wel.
By Kigazragore - 11:10
A backing strap when you make a butt weld in any. position. The backing strap should be about 1/2 to. 1 1/2 inches wide and from 1/8 to 1/4 inch thick.
By Zololl - 13:31
Good Answer: A backing strip is used for a good filled deep weld, while you only have access, or, only want to weld from one side. The backing.
By Sara - 06:53
When doing a root examination when a welded backing bar/strip is used what are we looking for in terms of defects? should it be fully fused?

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