In highway bridges and construction projects, prestressing and tensioning require measuring on-site conditions or long-term observation of component stress changes, which can be measured using core penetrating sensors. Different sizes of through core sensors can measure the stress and strain of single hole and composite core (i.e. single bundle, composite bundle) prestressed anchor assemblies. The core penetrating sensors produced by our company range from single hole anchor 200KN to multi hole anchor 20000KN