... T4 T6 H14 H18 3. Color: silver, champagne, bronze Aluminum alloy tube 1) Alloy: 1070A~8A06,5A02 5A03 5A05 5A12 3A21 2A11 2A12 ... resistance,4) Color: silver, champagne, bronze, black5) Application: rails, building frames, parts in large air-conditioner 6) Surface treatment: untreated profiles ...