What is the primary purpose of mill reports?

The primary purpose of mill reports, often referred to as mill test reports or certificates, is to keep track of the heat numbers of pipe. These reports provide essential documentation that includes the chemical and physical properties of the materials used, as well as the specific heat number associated with each batch of material produced. Heat numbers facilitate traceability; if a material is found to be defective or requires testing, the heat number allows for the precise identification of the batch from which it was made, ensuring accountability and quality control throughout the supply chain.

While manufacturing costs, supply chain logistics, and installation procedures are important aspects of manufacturing and construction processes, they are not the primary focus of mill reports. Instead, mill reports specifically ensure that the materials used, such as piping for high-pressure systems, meet the necessary standards and specifications, which is crucial for safety and performance in applications where structural integrity is critical.