Ø700mm Cast Aluminum Flange for Hollow Composite Insulator, Anodized & CNC Machined

Ø700mm Cast Aluminum Flange for Hollow Composite Insulator – Anodized & CNC Machined

Our cast aluminum flanges are engineered for hollow composite insulator applications, including GIS bushings, circuit breaker housings and transformer terminations. Each Ø700mm flange is produced by sand casting or gravity casting, followed by precision CNC machining of bolt holes, sealing faces and mating surfaces. Anodizing treatment provides enhanced corrosion resistance for outdoor and high-humidity environments.

Key Specifications:

• Size: Ø700mm (custom diameters available)

• Casting Process: Sand Casting / Gravity Casting

• Material: A356-T6 / A380 / Custom aluminum alloy

• Machining: CNC milling, drilling, tapping, facing

• Surface Finish: Anodizing (clear / brown / custom color)

• Concentricity: ≤0.5mm (or per drawing)

• Applications: Hollow composite insulators, GIS bushings, circuit breaker housings, surge arrester flanges