... with homogeneous thickness and transaction. Horizon Aluminum Pipes and Tubes are hollow wrought product with homogeneous thickness and transaction and only one closed ... the shape of circle, ellipse, rectangle, square, equilateral triangle, regular polygon, etc. OriginChina Brand NameHorizonStandards: ASTM B483, 2024, 5052, 5083 ... PLAZA, E&T Zone, Qingdao, China. 266555 Horizon Aluminum Pipes and Tubes