Application: It is mainly used in the road construction, building construction, airport as well as some main inspection Lab. It suit with STHZ-15 and STHZ-20 concrete drill machine. 1.Max. concrete cylinder diameter: 150mm 2.Movement : manual 3.Vertical degree: ≤0.04 Feature: Simple structure, Light and flexible, after capping, it is in flat surface, standard size, high […]