Andrew,
Depending on their process, you will get this "entire" tolerance in a short distance. If a tube is running at 10% wall eccentricity normally in the same cross section sample you will get one side of the wall at +10% and then -10% on the other. So there is your entire tolerance used...
Andrew,
What are your specifications to the mill? What are the tolerances that you have given them? Is this a hot-finshed product or cold drawn?
Most seamless tube mills generally produce to ASTM A519 as a norm, and within this spec, wall tolerance can vary from +/- 7.5% to 12.5%. In the...
Also, if the mill is pretty current in their testing equipment, they may be able to go back into their system and change the offset of what the test was performed at, but caution: it may not be able give you results on this extreme difference.
Also, 1% offset does not make sense. It is not a...
Mike,
Also E309 is commonly used as an eddy test method, with either of the following defects as the referenced standard:
1-A transverse notch up to 12.5% of wall
2-A drilled hole (up to 3 holes)
3-A longitudinal notch up to 12.5% of wall.
-Tom
Is there any other specification you need other than CE and chemistry? This alone shouldn't be too difficult to find. For example, you could get ASTM A106 Grade A or B to this CE level, although you will have to select material based upon chemistry/CE level.
Regards,
