... 1.Size:according to customers'order 2.Material: 5083,2A50,5A05,2A10 3.1kv-252kv-500kv 4.According to the drawings ... of materials to map production and processing.Material: 5083,2A50,5A05,2A10,6061,6063,2A50,5154. carbon steel, stainless steelSurface treatment: Transparent oil, rust-proof oil. Aluminum alloy forging flange 5083.5083,2A50,5A05,2A10,6061,6063,2A50,5154. carbon steel, stainless steel