... alloy: 6005 6061 6063 etc. Dimension: customized aluminium ventilation grillesA.Detailed specifications MaterialAluminium alloy6005,6060,6061,6063 ... processingextrude, precious cut, punch, drill, tap, mill, rivet, welding etcQualityHigh corrosion resistance, high weather resistance and good ... 6. Annual output: 60,000 metric tons’ aluminium extrusion C.Many samples of the productD.Excellent service1 ...