Abstract: The invention relates to a method for introducing vertical built-in parts into structures erected with a sliding formwork, particularly in annular concrete walls, and a device for performing the method. In order to be able to use inexpensive sliding formworks when erecting structures, e.g. silos and tanks, where there are absolutely surface-flush built-in parts required, a slide fastener-like system is provided for introducing said vertical built-in parts. The inventive slide fastener system provides guide anglepieces, which are fixed in clamping devices of the sliding formwork and temporarily engage behind guide bolts fixed to the front of the vertical built-in parts. Following the production of the concrete wall or the introduction of the vertical built-in parts the guide bolts are removed again from the vertical built-in parts, e.g. by separating cutting or splitting.