... 2 Mould design&extrusion 3 CNC precision machining anodized part 4 From material to finish product We are professional ... , convex, concave, turning, vertical cutting, Oblique angle cutting, drilling, gun drilling, tapping, assembly, welding, riveting, punch, stamping, bending, stretching ... Typical chemical composition (GB/T3190) Aluminum GradeSiFeCuMnMgCrZnTiimpurityAl60630.2-0.6<0.35 <0.1 <0.1 0.45-0 ...