More Info When fitting ports into vessels where the weld will be sanded off inside, it’s critical to fit the tube under flush. By fitting it under flush, it means that a good portion of weld material will remain after you sand the weld clean. This helps to prevent cracking, and ultimately results in cleaner, longer lasting equipment. 😎🍻👍🏻 #silverstoneindustrial #craftbeer #brewery #beer #welding #supportlocal #vancouver #yvr #quality #stainlesssteel