A312 13B TP304

[pflow]

I have been searching to no avail for the difference between A312 TP304 and A312 13b TP304.

Any information would be appreciated.

 

[XL83NL]

Im not exactly sure what 13b means, but it seems to refer to a certain edition of A312.
Is that what your question is about? If so, then Im not sure to which (other) edition you're comparing it.

 

[DVWE]

It appears that in 2013, A312 was revised twice. There was initial release, rev A and rev B.

I believe that's what the 13b is referring to.

 

[bimr]

ASTM A312/A312M - 16 is the current standard. Publication Date 01 January 2016.

Document History is:
ASTM A312/A312M STCH 2015-11-01 15B INAC
ASTM A312/A312M STCH 2015-09-01 15A INAC
ASTM A312/A312M STCH 2015-03-01 15 INAC
ASTM A312/A312M STCH 2014-11-01 14B INAC
ASTM A312/A312M STCH 2014-10-01 14A INAC
ASTM A312/A312M STCH 2014-03-01 14 INAC
ASTM A312/A312M STCH 2013-10-01 13B INAC

A Summary of Changes section appears at the end of the standard.

You would have to purchase 8 of these standards for the paper trail:

http://standards.globalspec.com/std/9970123/astm-a312-a312m

 

[pflow]

Thank you everyone for taking the time to reply. That is what I needed.