Steel truss manufacture process

The invention relates to the field of steel structure building, in particular to a steel truss manufacture process which includes the following steps: shearing a steel pipe according to preset length to obtain a plurality of main pipes and a plurality of branch pipes; manufacturing a three-dimensional model through a preset steel truss structure; manufacturing CAD three-dimensional graphs through intersection lines of all the main pipe and all the branch pipes in the three-dimensional model; generating a numerical control file through each CAD three-dimensional graph; inputting each numerical control file into a numerical control relevant line cutting machine, conducting insertion line cutting on the corresponding main pipes and the corresponding branch pipes and labeling the main pipes and the branch pipes; welding the main pipes and the branch pipes according to labeled numbers to obtain the steel truss of the preset structure. By means of the steel truss manufacture process, connection accuracy and welding quality are improved, welding deformation is reduced, welding seams are continuous and smooth, labor intensity is reduced, manufacturing efficiency is improved, and the accuracy of the steel truss is further ensured.