Why are the SpaceX Starship, "rings" the width that they are? Wouldn't creating the rings from SS that's twice as wide reduce the welding by half?

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    $\begingroup$ building it out of a single really wide ring would remove most of the welding $\endgroup$ – JCRM Sep 4 at 1:01
  • $\begingroup$ I could be wrong, but I believe that's simply the biggest width that you can buy rolls of steel in. IIRC, the width used to be smaller in the beginning. $\endgroup$ – Jörg W Mittag Sep 4 at 8:04

The largest commercially available width of a roll of stainless steel in the United States is 72 inches. Apparently this is a standard size, and getting something larger would be a custom order, and not quickly and easily available.

The vendor Outokumpu (determined by photos of rolls, and the logo found upon them. Very similar to Lucents Brown Ring of Quality for the 2000's) sells 72 inch rolls.

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  • $\begingroup$ I take it then, if SpaceX is successful, they may in the future have enough pull on the manufacture to ask for custom-built SS, even if it requires spending millions building special equipment. $\endgroup$ – Tom Cumming Sep 17 at 1:26
  • $\begingroup$ In general if you are willing to order enough, the vendor will invest. How much is enough is the question. $\endgroup$ – geoffc Sep 17 at 10:48

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