I worked at Hydrospin in Huntington Beach, CA. USA before and after Luxfer bought the company. Later moved operations to Riverside. I operated the large drawbench and CNC machines for large diameter cylinders.

These pressure vessels still do destructive testing randomly throughout manufacturing. There are companies who short change on quality assurance like Boeing , Martin Baker with Martin Baker there was an issue with CAD for ejector seats in America the military change CAD every 6 months and test them on a test rig out of 3000 CADs 3 failed miserably and all NATO air force jet fighters were grounded for 90 days until the problem was resolved even aerospace components have failures .

That's easy, the red one is used for Coca Cola.

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