Sounds strange at first: The order situation is stable, the customers are loyal, the machines are busy - and yet the Gusswerke Leipzig (formerly Halberg Guss) have now filed for bankruptcy. One year after the 700 or so employees fought over weeks of strikes to keep their jobs. What's next in Böhlitz-Ehrenberg? With this step, Gusswerke Leipzig wants to detach itself above all from the sister plant in…