What do the stamps on compressed gas cylinders indicate?

The stamps on compressed gas cylinders indicate the safety test date, which is crucial for ensuring the integrity and safety of the cylinder during use. These stamps confirm that the cylinder has undergone testing to check for any defects or weaknesses that might pose a hazard, particularly under high pressure. The safety test date helps users determine when the cylinder was last inspected and when it needs to be tested again, thereby reducing the risk of accidents or failures during operation.

The safety of handling compressed gases relies heavily on the maintenance and inspection of these cylinders, which is why the test date is critical information. Proper identification through these stamps ensures that users and safety personnel can easily verify that the equipment is compliant with safety standards and ready for safe operation.