Re: ASTM B705 Inconel welded pipe - Manufacturing welding process

From: <Christopher>
Date: Tue Feb 27 2007 - 00:50:00 EST

On Feb 26, 2007, at 10:55 PM, sviswan@technip.com wrote:

> The supplier is offering the material that uses a filler material.
> From the
> text of the ASTM std. the requirement of not using a filler material
> is not
> an optional one. Will the offered material qualify under the
> specification?

I think you've answered your own question. The spec requires that no filler metal be used. Pipe which is welded with a filler metal isn't compliant because it uses filler metal. Therefore the offered material isn't compliant and won't comply.

I don't know why that particular weld process is mandated, but if I were to guess, I imagine it's to increase the cooling rate and prevent hardening in the weld.
Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=Yxrjx3g4DbvFLKg_rfONIkiV3fm_AoknSHoOUNBdOAYGiW94J_mJla7E4SWJklyq7gbQ9md53CNYmWY3FoA">chrisw@skypoint.com</a> | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania

1864)
<a href="http://www.skypoint.com/~chrisw/">http://www.skypoint.com/~chrisw/</a> Received on Tue Feb 27 00:50:00 2007