Final answer:
The tank factor for an H-cylinder cannot be determined from the provided information as it depends on specific design and standards.
Step-by-step explanation:
The tank factor for an H-cylinder is not mentioned directly within the given text snippets. A tank factor, sometimes also referred to as the tank constant, is specific to the type of cylinder and the gas it contains. It represents the volume of gas at a standardized temperature and pressure that a tank can deliver. This factor is not universal and depends on the specific design and standards the tank adheres to. Without specific context or reference standards, it cannot be determined from the provided information.