15/17mm Formwork tie rod Casting Wing Nut

15/17mm Formwork tie rod Casting Wing Nut It is high quality construction formwork fastner and used in many large construction projects,Such as High rise building, Bridge,Tunnel, Nuclear power projects. Features: 1. High tensile strength material 2. High process precision, precise thread. 3. Surface treatment: electroplated or hot dip galvanized.