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225 u channel al products are offered for sale by suppliers on Alibaba.com, of which aluminum profiles accounts for 20%, led profile light accounts for 17%, and steel channels accounts for 15%. A wide variety of u channel al options are available to you, such as punching, cutting and bending.You can also choose from aisi, astm and gb u channel al,as well as from c, c channel, and u channel u channel al, and whether u channel al is q235, carbon steel, or galvanized steel.