End fitting,FRP-rod,crimping and sealing are the four elements to ensure that the mechanical characteristics..

The end fitting is forged steel by machined. The end fitting are pressed after chemical composition analysis, hardness and dimension tolerance inspection.

The FRP rod should have good vibration absorption,flexible resistance, fatigue fracture resistance, high temperature resistance (200 ℃), acid corrosion resistance, tensile strength greater than 1100 MPa.It must be dimension tolerance check, moulding check and high temperature test.

Conection zone of end fitting and core ensure the mechanical strength and avoid the damage of the core caused by the large compression, optimize the dimensional tolerance between the inner hole of the end fitting and the core diameter to control the compression accuracy .

Composite insulators Housing and sheds type should be further optimized, improve the hydrophobicity migration and hydrophobicity recovery ability.