New 316L tube internal pitting
New 316L tube internal pitting
(OP)
Hi,
we want to order new 316L SS tubes based on ASTM A269. However, we have been made aware that small diameter tubes may have suffered internal contamination and pitting due to manufacturing process resulting from insufficient cleaning (especially for small dia tubes) and this is accepted "normal".
I strongly find this unacceptable to have a pitted or contaminated brand new tubes.
what is the industry experience? would you accept this? has anyone come across something like that?
thanks.
we want to order new 316L SS tubes based on ASTM A269. However, we have been made aware that small diameter tubes may have suffered internal contamination and pitting due to manufacturing process resulting from insufficient cleaning (especially for small dia tubes) and this is accepted "normal".
I strongly find this unacceptable to have a pitted or contaminated brand new tubes.
what is the industry experience? would you accept this? has anyone come across something like that?
thanks.





RE: New 316L tube internal pitting
The ID should be smooth and clean, period.
We have some customers with special ID requirements (surface finish or special cleaning procedures) but for normal service that shouldn't be required.
If you get tubing in that has visible contamination reject it, it fails the workmanship clause.
Now, the ID may be rough, but that is another issue. Ask to see samples of similar product.
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P.E. Metallurgy, Plymouth Tube
RE: New 316L tube internal pitting
RE: New 316L tube internal pitting
RE: New 316L tube internal pitting
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: New 316L tube internal pitting
RE: New 316L tube internal pitting
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube