The OPC UA for Metal Forming specification contains various building blocks for metal forming that enable use cases to be addressed across different types of metal forming machines defined in different companion specifications. The aim of the specification is to be able to map metal forming machines and define all relevant process values for metal forming. The Metal Forming specification is an instance of the existing Machine Tools specification. The Machine Tools specification is extended by the Metal Forming specification, which allows the description of metal forming processes and machines.