A Plain-English Guide to Air Bubble Prevention for Thin-Wall Metal Tubes

https://weld-verification-journal.hexaforgey.com/posts/what-to-check-about-tank-size-planning-for-cast-metal-blocks

A Plain-English Guide to Air Bubble Prevention for Thin-Wall Metal Tubes Thin tubes have close front and back surfaces and curved entry paths. Air bubbles can block the sound path and create missing or weak signals