3D printing of metal injectors for chemical production. The nozzles have a built-in screw channel and an internal cavity. The external thread is M45x1.5. 3D printing of injectors is made of stainless steel on a 3D metal printer 3DLAM Mid2019 at the center for additive technologies 3DLAM in St. Petersburg. The total time of 3D printing of metal injectors is 27 hours. Printing material spherical PH1 powder manufactured by JSC "Polema", fraction 0-40 microns.