Qinhuangdao Haimei Aluminum Co., Ltd, the leading manufacturer of Rigid Aluminum Conduit, Couplings, Elbows & Nipples in China. Specification Data:Alloy: HaiMei Rigid Aluminum Conduit and Accessories are manufactured from 6063 Aluminum alloy.Standard: Haimei Rigid Aluminum Conduit and Accessories are listed by Underwriters Laboratories Standard for Electrical Metal Conduit – Aluminum Bronze & ...