carbon steel contruction u channel 1)length: max 12m 2)grade:Q235,Q345 3)standard:BS,GB,JIS 4)contact person:karen carbon steel contruction u channelnameu channel,steel channel,hot rolled channelBrandSINO EASTCertificatISO,SGS,BVStandardAISI,ASTM.BS,DIN,GB,JIS quality we can supply customers' with different specifications of the highest quality and lowest price.Sincerely welcome to contact us for ...