I am not sure an equivalent exist, the nearest equivalent API 5L is not equivalent. Also the ISO 3183-1,2,3 are if i remember are merged into a single ISO 3183-2007.
However you are unlikely to get an exact equivalent as far as my knowledge goes especially it seems to be a critical application.
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Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
But only the problem is some of the requirements of the ISO are not met by the API 5L (infact if I remember the API 5L committee was looking to standardise/modify 5L in line with the ISO or like some other API/AGMA/ASME standards merge the 5L with the ISO.
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Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches