... C steel channel dimensions 1.Standard:AISI,ASTM,JIS,DIN,GB 2.Surface: bright,polished,hot rolled 3.size from:50x25 TO ... 300X90 C steel channel dimensions1.Standard:AISI, ... ASTM,JIS,DIN,GB2.Surface: bright,polished,hot rolled3.size from:50x25 TO ... Pictures showour stockour factorywelcome you come to visitwe are direct manufacture with ...