Aluminum Name   Aluminum door frame   Material Aluminium alloy; 6063, 6061, 6082, 6005,6060, T5, T6, Section Shapes Section Shapes I, U, T, C, Z, L, H, square, round, flat, hollow, t-slot and other complicated shapes by custom design. Surface treatment 1. Mill finished(all color on the world ) 2.Powder coating: Bronze, black, white, etc. 3.Anodized: Black, silver, bronze, golden, champagne, …