155489 ⎘
Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body; Component parts thereof; Accessories therefor; Stay-bolt connections, e.g. rigid connections Flexible connections, e.g. of ball-and-socket type