ASTM A106 Marking requirements-below 2"

[ravera]

A106-B states that marking shall be per ASTM A530. A530 allows bundle tags for sizes below 2" Nominal Diameter. In A106 however, the material spec specifically states that 1 1/2", 1 1/4", 1" & 3/4" SHALL BE MARKED per A530. My interpretation is that A106 intends for each lenght of pipe in these diameters to be marked with the information outlined in A530. Is there a code case that clarifys this point?

Thanks in advance for any input--

 

[metengr]

I read thru SA-106. For pipe less than 2" NPS it does indeed refer you to SA-530. In SA-530, part 24, for pipe 2" NPS or less and pipe under 3 feet in length, the required information may be placed on a tag securely fixed to the bundle or box in which the tubes are shipped.

 

[ravera]

Thanks Metengr. I understand your comments. My concerns:

A106 specifically states:
"For sizes 1 1/2, 1 1/4, 1, & 3/4 EACH LENGTH SHALL BE MARKED". A106 also states that for sizes less than 3/4", the marking may appear on a bundle tag.

Since A106 is the prevailing spec, it supercedes the A530 requirement which allows use of bundle tags for this size range (1 1/2" thru 3/4").

There's no doubt that the marking and full traceability is mandated by most petrochemical plants and my feeling is that A106 (2005 & 2006) is trying to address the requirements of the industry. I was hoping for a code case or some form of clarification on this point.

As a matter of note, I work for a major pipe producer. I'm at odds with one of our mills on this point. Having come from the nuclear industry, I find it strange that A106 would have gone to the trouble to specifically address these sizes. It would have been much less confusing to refer to A530 on this point if the intent was to use bundle tags.

Thanks Again--