MT 333-1993 煤矿机车产品型号编制方法和管理方法

MT 333-1993 The method for preparing the model number of coal mining locomotive products and the management method are as follows: Model number preparation: The model number of coal mining locomotive products is composed of the type code, the series code, the model code and the optional part code. The type code, series code and optional part code are determined by the manufacturer, while the model code is determined by the classification standard of the product. Management method: The management of coal mining locomotive products should be carried out in accordance with relevant national and