... for free Finished:black iron,HDG,spray paint thickness:0.5mm to 15mm Main ProductsZ steel structure,C shaped steel stucture,channel ... East,Western EuropeQuality StandardGB,AISI,ASTM,BS,DIN,JISPackagingPVC is free,we also can pack as you requestThicknessfrom 0.5mm to ... dipped galvanized,electrogalvanizing,spray paint Q345 black iron special C channel steel