What type of container is CGA C-6 used to inspect?

CGA C-6 is relevant for the inspection of steel containers, specifically those used for the storage and transport of compressed gases. The CGA (Compressed Gas Association) sets standards and guidelines for the safe handling and use of gas containers, and the C-6 specification is specifically tailored to the design, construction, and testing of steel cylinders.

Steel cylinders are commonly utilized because they can withstand high pressures and are durable in various environmental conditions. The inspection processes outlined in CGA C-6 are crucial to ensure that these containers maintain their integrity and safety during use, preventing risks such as leaks or ruptures.

In contrast, aluminum, plastic, and composite containers have different properties and may fall under other standards or guidelines for inspection, as they require unique considerations based on their materials. Therefore, the focus of CGA C-6 is specifically aligned with steel cylinders, making it the correct choice for this question.