... tubes over 16” up to 24”. We supply aluminum extrusions in most aluminum alloys and tempers: 2024, 3003, 5083, 5A06, 5456, ... 6060, 6005, 6101, 6061, 6063, 6082, 7005 and 7075.Queen LeeQingdao Horizon Aluminum Co. Ltd. tel: 86-0532-80980961fax: 86-0532 ... -18354712100.add: Suite 1113, No.1 BUILDING, ZIJIN PLAZA, E&T ZONE, QINGDAO , CHINA.www.aluhorizon.com construction and industrial aluminum profile