1.The name of product:harmonica-shaped tube 2.Product dimension(mm):4*27 3.Hole:8 4.The grade of aluminum:3003 5.The use of product:mainly use of the part of aluminum tube radiator 6.The advantage of product: high-strength, corrosion resistance, aseismic, good thermal performance, especially for large radiator. Specification 1. Width:8~99mm 2. Height: 2~10mm 3. Wall thickness:0.35mm~4.00mm 4. Hole:1~33