... processes to complete processing; the part is 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 GIS/TGCB;Extra high voltage 1100kv GIS; ... steel, stainless steelSurface treatment: Transparent oil, rust-proof oil. Aluminum alloy forging flange 5083.5083,2A50,5A05,2A10,6061,6063,2A50 ...