Hi u can refer the code - ASTM 999, where table no-2 shows the straight ness of piping.
On Saturday, April 23, 2011 at 1:22:24 PM UTC+5:30, Raj wrote:
Hi,
A 358 is specifies about variations in dimensions as mentioned below.
Refer 7.1.3 ??
7. Permissible Variations in Dimensions
7.1 Permissible Variations—The dimensions at any point in a length of
pipe shall not exceed the following:
7.1.1 Outside Diameter—Based on circumferential measurement, 60.5 % of
the specified outside diameter.
7.1.2 Out-of-Roundness—Difference between major and minor outside
diameters, 1 %.
7.1.3 Alignment—Using a 10-ft or 3-m straightedge placed so that both
ends are in contact with the pipe, 1⁄8in. [3 mm].
7.1.4 Thickness—The minimum wall thickness at any point in the pipe
shall not be more than 0.01 in. [0.3 mm] under the nominal thickness.
Other code A530 (Standard Specification for General Requirements for
Specialized Carbon and Alloy Steel Pipe) is specifies "Straightness
Tolerances" and mentioned in table-3. (But this is not applicable for
your case) - For your info only.
I just want to throw some light on your query !!!
Cheers!
Raj
On Apr 21, 3:30 pm, biju <biju....@gmail.com> wrote:
> Hi,
>
> We received some stainless steel pipes A358TP316L 16"SCH-10S having an
> out of straightness 23 to 25 mm .Pipe length is around
> 11.800mtrs.Client rejected those pipes.Is B31.3 saying any thing about
> out of straightness requirements. If their please provide me the
> details. Also is their any manufacturing spec requirements for this?
>
> regards,
>
> Biju
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