... for free Finished:black iron,HDG,spray paint thickness:0.5mm to 15mm Main ProductsZ steel structure,C shaped steel stucture,channel steel ... JISPackagingPVC is free,we also can pack as you requestThicknessfrom 0.5mm to 15mmMaterialQ235,Q195,Q345Sizelength,width,thickness,height can ... dipped galvanized,electrogalvanizing,spray paintMateriaQ235,Q195,Q345 Q195 black iron U shaped trail rail with holes