<div dir="ltr">Matthieu,<div><br></div><div>that's typical of the way we've installed it at UofM, and how I've done it on the outside (tens of thousands of feet of tubing). Just make sure they use a bender that yields a radius of 10 times the diameter of the carrier (inner) tube. Also make sure they use centering clips for the inner tubing at every weld joint on the external jacket. You don't want to weld the two tubes together.......</div><div><br></div><div>I'd recommend that you look at some of their work (at other customers) for neatness, uniformity, as well as attention to detail. Make sure you have them generate weld coupons you can inspect for all of their work/sizes. You definitely don't want any "sugaring" on the inside of your carrier tube, especially with reactive gases.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div>Dennis Schweiger</div><div>University of Michigan/LNF</div><div> </div><div>734.647.2055 Ofc<br></div></div></div>
<br><div class="gmail_quote">On Tue, Dec 16, 2014 at 11:33 PM, Matthieu Nannini, Dr. <span dir="ltr"><<a href="mailto:matthieu.nannini@mcgill.ca" target="_blank">matthieu.nannini@mcgill.ca</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>A local company is proposing to bend coaxial SS tubing to install a double containment gas line thus removing the need for welded 90° elbows. did you ever see that ? Any comment would be helpful ! </div>
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<div>Thanks</div>
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<div>Matthieu Nannini<br>
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<div>Début du message réexpédié :</div>
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<span style="font-family:'Helvetica'"><b>De: </b></span><span style="font-family:'Helvetica'">"Matthieu Nannini, Dr." <<a href="mailto:matthieu.nannini@mcgill.ca" target="_blank">matthieu.nannini@mcgill.ca</a>><br>
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<span style="font-family:'Helvetica'"><b>Objet: </b></span><span style="font-family:'Helvetica'"><b>Bending coaxial</b><br>
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<span style="font-family:'Helvetica'"><b>Date: </b></span><span style="font-family:'Helvetica'">15 décembre 2014 15:31:10 UTC−5<br>
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<span style="font-family:'Helvetica'"><b>À: </b></span><span style="font-family:'Helvetica'">Tom Britton <<a href="mailto:tbritton@criticalsystemsinc.com" target="_blank">tbritton@criticalsystemsinc.com</a>><br>
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<div>Hi tom,<br>
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A local company here can bend coaxial tubing. They quoted me 4800$ for the 2 lines BCl3 and SiCl4.<br>
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What do you think of bending ? They told me the 1/4 wasn’t kinked at all.<br>
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Matthieu<br>
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