What type of stainless steel connectors must all tubing be a minimum of?

The correct answer is Type 304 stainless steel connectors, which are essential for ensuring the integrity and safety of systems using compressed natural gas (CNG). Type 304 is widely used in a variety of industrial applications due to its excellent corrosion resistance, particularly in environments that may be susceptible to oxidative and corrosive substances.

In the context of CNG systems, the resilience of Type 304 against corrosion helps in maintaining a safe and reliable connection between tubing sections. This is crucial because any failure in the connections could lead to leaks, posing safety hazards. Moreover, Type 304 stainless steel can withstand a range of temperatures and pressures typical in CNG applications, making it a preferred choice for this type of service.

While other types of stainless steel, such as Type 316, also provide corrosion resistance and are suitable for certain conditions, Type 304 meets the minimum required specifications for CNG systems in most standard practices. Selecting the appropriate connector material is a foundational element in ensuring system durability and safety.