Welding Alignment Rings

[JBrady]

So far just mild steel but very good idea for TIG or gas welding.

Each ring fits inside the tube and aligns the two pipes with a divider. The divider becomes the welding filler. You ring right into the joint which prevents internal slag and alignment issues.

http://www.summitracing.com/search/Part-Type/Exhaust-Tubing-Alignment-Weld-Sleeves/