closed structure for mounting hole of steel form

摘要

This is intended, steel is to prevent second of form of the deformation of outer section, interval depending on concrete structure is by forming closure member in beginning and end mounting hole, pass through the placement of concrete, concrete is also avoided reduction and projection and grinding action, operation does not require to increase productivity, when being related to a kind of installation of steel ball closure structure form according to the shortenings reduction process of working time of labour to improve economic effect.