pianow but the Hamburg ones have a general standard action that most of the piano manufacturers in Europe are using including the bosendorfer
European Steinway actions, as well as brands like Fazioli, Bösendorfer, Blũthner etc., are made by Renner. However, these actions are far from a general standard but instead are designed exclusive by respective brand and license made by Renner. A few years ago Steinway acquired Renner and it's now a part of the Steninway corporation so I guess that's a big reason why they put it in the American Steinways too. Bechstein too used to have their actions made by Renner but nowadays they make their own actions.
