The cartridges are used with expanding devices of domestic and foreign production. The largest utilisation of cartridges was recorded in building, metal and power industries.The advantage of using cartridges in the industry lies in low elaborates, reliability and with no further demands on energy sources.Cartridges for expanding devices are produced from CuZn 30. They are charged with diving compounds the weight of which is chosen in accordance with the required level of outputs. This compound safely ignites the driving charge and has no erosive or corrosive effects. Case's neck is choked into a stellar crimping and sealed off with a special thermoplastic lacquer to be airtight. Cartridges are loose packed into small boxes.