SIJ Ravne Systems is a manufacturer of industrial knives, who is specialized in producing high quality chipper knives with special chipper steel developed at our own production plant in Europe, Slovenia. Ravne Systems brand is synonymous with superb quality and advanced expertise.  

Our production capacities are tailored to customers’ needs from small to large quantities. There are five steps in the production oh chipper knives: correct choice of steel, precise machining, close tolerances, special heat treatment and strict quality control.

400 years of tradition in the production of high-grade steel in Ravne provides us with rich experience and knowledge.