The structural steel is manufactured and supplied according to the projects developed by the customers within short deadlines, i.e., up to 100 tons of prefabricated structures a month. If necessary, prior to the commencement of manufacture the materials are tested with regard to their strength and conformity to the requirements. The prefabricated structures are tested also in conformity to the requirements. Thereby, the customer has full confidence in the quality of the structural steel supplied to the facility. The structural steel is often supplied hot galvanized, but in most cases – paint coated.