Bolt hole drilling tools for III process including pneumatic bolt hole trilling fixture, pneumatic balancing machine, hydraulic tablet machine, which is safe, effective and with high positioning accuracy and good stability.

Valve hole drilling tools for III process contains tilt able and rotary valve drilling fixture, tilt able platform valve hole drilling fixture, which can machine the valve hole on the machining center and the drilling and milling machine.

Rotatable bolt hole and valve hole drilling tools for III process (auto reversal machine): one fixing that can drill the bolt hole firstly and then reverse to drill the valve hole.