Russian steel maker MMK’s Mechanical Repair Complex has designed and manufactured a line of import substituting equipment for steel enterprises of the Russia. Together with the Federal State Unitary Enterprise TsNII Chermet named after IP Bardin, MMK has started manufacturing CCM molds for continuous casting machines. One of the equipment customers was EVRAZ NTMK, where CCM units located directly under the mold were also designed and manufactured along with sections No. 1 with a modern centralized lubrication system and additional roller cooling.Also, several types of sintering carts were manufactured and serially delivered to EVRAZ KGOK. Roller whips for the DANIELI project caster were manufactured for ChMK. In addition, in 2022, MRK LLC supplied oxygen lance tips designed for the customer, which are strategically important metallurgical equipment, without which it is impossible to use oxygen-converter technologies.The presence of its own qualified technological, design and production personnel, the use of new modern technologies using computer modeling, a line of cold-hardening mixtures, modern welding, surfacing and CNC machine tools, all this allows MRK LLC to create complex and high-tech units, including basic cast metal structures of complex configuration.