carborundum Posted August 11, 2019 Report Share Posted August 11, 2019 I want to spray inside of vertical tubes that are part of a steel gate. Spraying would be best before welding.However, the process could be changed to inject liquid after welding (through vent holes that would be welded shut after injection.) Any concerns due to welding heating the fluid? Quote Link to comment Share on other sites More sharing options...
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