The topic of the paper is the design, manufacture and control of a load-bearing beam used for the transport of boiler components with a total weight of 60 tons. Due to the load distribution, the middle of the load-bearing beam is loaded with 30 tons, while each end is loaded with 15 tons. The paper also designed and calculated the beam so that its maximum stress caused by the weight of the transport units does not exceed the allowable stress, which is less than the yield strength of the material for the value of the safety factor. The design of the load-bearing beam was performed in the program "Autodesk Inventor 2021", where after entering the necessary data on the material, loads and supports of the representative, the calculation of the same was obtained. The maximum stress obtained by the calculation in the mentioned program is 197.9 MPa, the maximum deflection of the beam is 0.9442 mm and the safety factor for the amount of stress is 1.9. In the next part of the work, a manual calculation of welded joints of the structure was performed. By comparing the reduced stress for each welded joint and the allowable stress in the welds, it was proven that all welds meet the set conditions. The third part of the paper explains the technological procedures for the manufacture and inspection of load-bearing beam. The positions that are welded to the HEB 240 profile are cut with a water jet from sheet metal of appropriate thickness to certain dimensions. They are welded by MMA welding using the basic electrode EVB 50, which has a high yield strength of up to 610 MPa. Visual inspection is required before, during and after the welding procedure, and an ultrasonic method is required to determine defects, cracks or other irregularities in welds.