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what m means in some specs of astm?

what m means in some specs of astm?

what m means in some specs of astm?

(OP)
hi
how are you?
please answer my question:
what m means in some specs of astm?
for example:a182/a182m
what is difrences between them?

RE: what m means in some specs of astm?

A182 uses inch-pound units, A182M uses SI (metric) units.  They are identical in all other aspects.

RE: what m means in some specs of astm?

And you need to know which to work to, the values are not exactly the same and the tolerances are slightly different.  Conversion can get you into a lot of trouble.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

RE: what m means in some specs of astm?

(OP)
thanks so much  

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