Re: Photo: SHPX Tank Car 20504 & Friends

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Tony Thompson #185306 Bob Chaparro wrote: Photo: SHPX Tank Car 20504 & Friends Photo from the Industrial History Blog: https://tinyurl.com/wctpmnu9 SHPX 20504 has a longitudinal rivet seam along the top of the tank. What is the technical term for this type of construction? Three-course construction, if I understand your question. There are two top sheets and a bottom sheet, thus three rivet courses. Tony Thompson tony@...
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