... mainly used for high-voltage switch connection. Widely used in various SF6 circuit breaker. Voltage grade:High voltage72.5kv-252kv ... GIS/GCB;Ultra-high voltage 363kv-800kv ... treatment: Transparent oil, rust-proof oil. High voltage electric power equipment in forging connecting flange 5083,6A02,6061,6063,2A50 ...