Get a guided demo of the on-site erection process for a PU insulated steel frame warehouse. Watch how prefabricated steel components—Q355b columns, cold-rolled C/Z purlins, and sandwich panels—are assembled step by step. See practical workflows for aligning frames, securing cladding, and installing UPVC downpipes, plus troubleshooting tips for common assembly challenges. Ideal for B2B viewers evaluating industrial storage building construction.