Product Details  Professional factory at steel structure,various steel structure components/buildings can be supplied as per your request.  1. Size: full range of both metric and inch size 2.Grade: Q235B, Q345B. 3.Standard: GB50205-2001 4. We can process and fabricate structure as per your requirements with advanced  equipments ,strong technical support and best producing capacity.  5.Packing: In bundle or bulk.