Metal structure fabrication is a high-tech process that requires state-of-the-art equipment, qualified personnel, and high production standards.
Our own laboratories, where products are tested for compliance with chemical composition (analytical and spectrographic analysis) and mechanical tests for compliance with physical and mechanical properties enable proper control of rolled products and confirm its compliance with the declared specification.
Special multiroll equipment for processing sheets and structural shapes removes any possible gaps that result from the unevenness of the connected elements, to ensure the rated load-bearing capacity of the structure.
Shot-blasting of the rolled metal surface using machines equipped with powerful turbines (fraction speed reaches 90 m/s) completely removes rust, scale or contaminants and ensures surface roughness of at least 40-60 microns for reliable adhesion of paint and lacquer with the metal surfaces and long resistance against rust after application.
State-of-the-art automated CNC equipment ensures high quality and accuracy in structure fabrication. Automatic drilling equipment makes holes with a precision of at least 0.5 mm for bolted connections, including for the fitting of high-strength bolts.
All edges are root faced with a 2-mm roof face radius according to EN 1090. Fabricated parts are subjected to instrumentation control and labeling.
Welding is performed at the plants according to certified welding technology (WPS and WPQR) in the fabrication shops, which are equipped with beam stands and welding machine lines of various modifications, enabling performance of different welding types and methods. A welding manual is prepared for each project, specifying the welding technology, process parameters and interim and final control conditions for weld seams, according to ISO 3834-5. Weld seams are subject to visual and instrumentation control.
Additional shot-blasting of prefabricated metal structures using shot-blast machines removes contaminants, dust or rust accumulated during fabrication. Structures are dedusted and degreased to ensure high adhesion during the subsequent application of paints and lacquers.
Design requirements for corrosion protection of metal structures are met by applying paints and lacquers to the structure surface using an airless application method. We boast a full-cycle for hot-dip galvanization of different structures (electricity pylons, stairs, highway protection structures, lighting posts, etc.). Galvanized metal structures have much longer service life and quality of coating.
Metal structures measuring up to 3600 x 3600 x 24000 mm are dried in special drying chambers, which accelerate drying time and contribute to a more efficient implementation of contractual arrangements.
Crane equipment, fitted with magnetic washers to load structures onto a prevent deformation during loading. Various packaging arrangement prevent damage during transportation.
Having our own installation company with state-of-the-art machinery, tools, equipment, and accessories means we can provide a full “turnkey” work package and control the process at all stages of construction.