For some time the foriegn products have been a bit suspect.
My son works for an Underwater Gas and Oil exploration company and sources materiel and finished items from many sources.
Some stainless steel pipe and elbows were fitted into the high pressure air system in an engine room and subsequently and elbow exploded, luckily no one was injured as my son had just left the engine room!
The investigation returned the fact that the source of the elbows was from an unknown source and they were all suspect even though a certificate of conformation had been issued!
Another example was a Stainless steel ‘U’ shackle rated at 7 tonne which sheared showing crystalline fracture. Again from an unknown source with again a certificate of conformation on it.
This has made my son very careful where the suppliers get their goods from.
It was surmised they were from Chinese sources but they could not verify where they came from.
take care with imported materiel.
This brings to mind the tade in fake aircraft spares, all found to be lacking and dangereous.
Clive