What information is stamped on the boiler?

The information stamped on a boiler typically includes the date of manufacture and the name of the manufacturer. This stamping serves several important purposes. First, knowing the date of manufacture helps in determining the age of the boiler, which can affect maintenance schedules, inspections, and compliance with regulatory requirements. Second, the manufacturer's name is crucial for identifying the original source of the boiler. This assists in finding parts, understanding warranty information, and receiving support for maintenance and repair.

While other options tackle important elements related to a boiler's construction or specifications, they do not provide a comprehensive overview of essential identification details that a boiler stamp is meant to convey. The maximum pressure rating and materials used are typically found in design documents or specifications rather than on the boiler itself. Moreover, design specifications for every part would be far too detailed for a simple stamp, as that level of information is kept in the official documentation surrounding the equipment. Thus, the correct answer encapsulates critical identification and regulatory information uniquely presented on the boiler.