Specifications thickness: 4.5mm-12.5mm length:6M,9m,12M brand name : kaiwei shape: U channel place of Origin: Hebei china zinc coating 40-80um; Price: the lowest price in china Material (Steel Grade) Size (bbd) (mm) Q 235 A /B Q 345 A 20203 63635 1001006 14014014 20204 63636 1001007 14014015 25253 63638 1001008 14014016 25254 636310 10010010 15015010 30303 70704 10010012 15015012 30304 70705 10010014 15015014 36363 70706 10010016 15015016 36364 70707 1101107 16016010 40403 70708 1101108 16016012 40404 75755 11011010 16016014 40405 75756 11011012 16016016 45453 75757 11011014 18018012 45454 75758 1251258 18018014 45455 757510 12512510 18018016 50503 80805 12512512 18018018 50504 80806 12512514 20020014 50505 80807 1301309 20020016 50506 80808 13013010 20020018 56564 808010 13013012 20020020 56565 90908 13013014 20020024 56566 909010 14014010   63634 909012 14014012