What is the minimum standard weight for steel and wrought iron steel required?

The minimum standard weight for steel and wrought iron pipe is referred to as Schedule 40, which indicates specific dimensions and wall thicknesses that meet the necessary strength and safety standards for gas distribution systems. Schedule 40 pipes are commonly used in various applications, including low to medium pressure gas systems. This schedule provides an adequate strength-to-weight ratio and is widely accepted in the industry for applications dealing with gas piping, ensuring that it can effectively handle the pressures involved without risk of failure.

It's essential to understand that other schedules, such as Schedule 20, Schedule 80, and Schedule 100, serve specific purposes with different wall thicknesses. Schedule 20 is lighter and not suitable for high-pressure applications, while Schedule 80 and Schedule 100 have thicker walls designed for more demanding situations, thus are not the minimum requirement. Therefore, Schedule 40’s specifications make it the appropriate choice for standard gas pipe installations according to industry standards and codes.