... steel structure, included design and manufacuture, welding beam, column, C,Z -shape purlin. We can supply all kinds of steel structure, included design ... and manufacuture, welding beam, column, C,Z -shape purlin.Steel Structure:Specs: Steel frames: Q235, Q345, etc.Roof ... , shopping mall,dinning hall, stadium etc.Price terms: FOB, CIF C&FPayment: T/T, L ...