1) Alloy: 1100 3003 3004 2024 6061 6063 7075 5052 5083 5086 6A02 2014
2) National standard: GB/T6893 GB/T4437.1 GB/T4437 GJB2381
3) Diamter: 6mm`400mm
4) wall thickness: 0.5mm`40mm