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Thanks to the individual who suggested you contact Carl Andreone or me (Stanley Yokell). As one writer suggested, tube plugging is not always a simple matter. If they ever get around to it, Chemical Engineering will publish a recently written article on Tube Plugging and Sleeving. Look for...

Thanks DeanC. Boulder address is MGT Inc., 4390 Caddo Parkway, Boulder, CO 80303-3607. Incidentally, Dr. GEO Widera at Marquette University is looking into setting up a library of papers in the list I prepared so investigators can get a head start on literature searches. So far as Loctite is...

Glue, of course. You can make your own assessment if you attend the course, "Shell-and Tube Heat Exchangers: Mechanical Aspects" next month in Houston with all the other glue sniffers.March 26 through 28 at the Hotel Derek. I'll be glad to share some of the sniffing glue with you. Best...

In the many years that I have been studying tube-to-tubesheet connections, I have studied welded, expanded, welded and expanded, hydraulically expanded, explosive expanded, explosively welded (EXW)combinations of hydraulic and/or explosive expanded with roller expanded hybrid and combinations of...

All, Please correct the gap length behind the weld root in my post. I shoulden't post information when I am half asleep. The gap should be 12.5 mm or slightly more, not 50 mm. Mea Culpa Surprised that no on picked me up short. Stan

Although it is common to "lightly roll tubes into tube holes before welding, it has the disadvantage of sealing the space so welding-generated gases can only escape through the weld puddle. This can be a source of porosity and subsurface inclusions. It does not matter whether the weld is a...