Hot Extrusion / Cold Drawn Aluminum Pipe Material Alloy:1070, 1100, 3003, 3A21, D97, K70A, 6061, 6063 State: H112, F, T4, T5, T6 Product Type: Harmonica-shaped tube, Drawn tube, strip seal, aluminum spacer, shaped profile, bar,Square aluminium tube, Round aluminium pipe, Irregular aluminium pipe,Auto air conditioning connecting Pipe, water tank tube Advantage: 1. OEM welcome, we can design and cut die to meet customer's special demand 2. Wonderful surface treatment, we can meet customers required on surface 3. Strictly quality control process assured higher quality. 4. Packing safety and convenient.