Solid tool Quality assurance LLC “BZS” serially produces one-piece tools from high-speed steel grades of domestic (JSC “DSS”, JSC “Elektrostal”) and imported (Boehler, Ravne) assortment: cutters for cutting pipes cutters for cutting pipes and bearing rings ("boats") The presence of its own thermal section with salt baths ensures full compliance with the requirements for the structure and hardness of the material.