This is just not correct. When Walter & Claude received the contract for Iron Wolf at SFGA they were unable to fulfill the fabrication process themselves. As such they partnered with Claremont. The quality of their work was so high that B&M never established another fabrication plant, and every B&M coaster in the world has been fabricated there.
There are many years when North America does not receive a single new B&M coaster. Having a production plant purely for the US/North America makes no sense. The Claremont site serves the world for B&M track and no other track fabrication plants exist.
Of course they could not fulfil the fabrication themselves, B&M have never manufactured anything, they are a consulting engineering company. All manufacturing has always been outsourced.
The information you give, suspiciously sounds similar to various enthusiast websites across the net, which for many obvious reasons, may not be the most accurate. It is true Walter and Claude were impressed with the work and asked the company to manufacture track. But there is no evidence to suggest this was all track. - There is a discrepancy here because some places say all track, but most say the US track,
Like I said, the US plant picks up the slack when others are rammed with work. The plant is not just been used for USA, but it is the primary USA one and certainly cannot fulfil the orders on it's own when the books are full.
Have you physically looked at the size of the Claremont plant, on Google Maps? It is big, but it is not
that big. B&M have, on some years pumped out 6 to 7 coasters, track fabrication is a complex and long process. Given the track length of these rides, and knowing a bit about steel fabrication, it is pretty easy to conclude that the sort of work involved there is far beyond the capability's of such a plant on it's own, when the books are full. That nicely brings us on to the other point, Claremont were a much smaller company, employed much less people and had a much smaller fabrication shop until they moved to their current premises in 2004. B&M were still pumping out those high numbers of new rides before then, so the argument of it all coming from an even
smaller plant before then becomes even less plausible. They have only grown to their current size, fairly recently, and a long time after B&M were must have rides.
Then you have the smoking gun, what someone posted a few pages ago. An interview / tour of Claremont where the employee specifically states they make track mainly for the US market. You do not get much closer to the source for information than that.
I was also looking at US import records all publicly available information on the net - I encourage you to go and have a deep dive, and it does get deep! A very very high amount of large and heavy imports regularly come from Italy on behalf of B&M going to the Claremont plant. Italy is where it is rumoured B&M have fabricated track from for a long long time. The size and weight of some of the shipments would certainly suggest it is track, and compared to the size and weight of the many shipments that come from many other European countries to Claremont, they are much larger and heavier. There is no way they will be buying raw steel from Italy, they do not really export it, it is not an industry they are really in as a country. Whatever is coming from Italy is already fabricated. I doubt it is going to be supports either, as if they were finished, they would ship straight to the coaster site. My money is on fabricated or partially fabricated track being shipped off to Claremont for finishing. Using Claremont, the company which has impressed Walt and Claude the most, for the final QA process on track fabricated else where.
I am sorry, but the whole B&M make all their track in the USA is based on a single possibly mis typed 'interview' or Chinese whisper of 'what Claude said'. Without any real solid evidence or merit.
There is strong physical evidence in many different forms and from many different directions, some I have outlined above that suggest the complete opposite.
Anyway....