steel channel sizes 1.AISI,ASTM,JIS,DIN,GB 2.Surface: bright, ... 3.size from:50x25 TO 300X90 4.best price steel channel sizes1.AISI,ASTM,JIS,DIN,GB2.Surface: bright,polished,hot ... to meet different customers’ requirements.3.Our Advantage(1)strict quality control and competitive price(2)inventories all over the year ...