On Feb 26, 2007, at 3:12 AM, meetmenil123 wrote:
> Can anybody tell me what is ASME STD for tubes? And what is diffrence
> between pipes and tubes?
This is something you should already know from reading through the
material specs for pipe and tubes. You should also know it already from
reviewing the archives because it's been discussed many times. Finally
you should already know it from doing a Google search on the topic. If
you can't make good use of your reference material, your career as a
piper is not going to be a pleasant one.
That said, pipe is specified by the OD and specific odd-seeming wall thickness using somewhat arcane wall thicknesses. Tubing is also specified by OD, but available OD's normally are so-called 'preferred' (1/16", 1/8", 3/16" etc here in the US, and analogous dimensions for ISO) dimensions and the wall thicknesses are normally those for which sheet metal and thin plate are stocked. Tube and pipe are not normally interchangeable unless you get lucky. Flanges, for example, are made to fit pipe, not tube.
Do yourself a favor make a Google search and download a schedule of pipe sizes from any of hundreds of suppliers who have such things at their web sites.
Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=xx1bC23uSUC2KWSpVNdXXGSUL2bDvr4eKmmcyvSECcJJ-Z59zZiT3OEKuUPtZce73MZ1tP7Be3z9Jw">chrisw@skypoint.com</a> | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania1864)
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