Answer :
Final answer:
The specific ASTM pressure rating and standard dimension ratio for NSF approved plastic pipe varies based on industrial standards and can often be a minimum of 80 psi and a standard dimension ratio like SDR 11, although the exact values are not provided in the question.
Explanation:
The ASTM pressure rating and standard dimension ratio required for NSF approved plastic pipes can vary depending on specific standards set forth by organizations relevant to the chemical or construction industry. While the question itself does not provide the exact figures needed for the pressure rating or the standard dimension ratio, engineering standards and typical specifications often require a minimum pressure rating of 80 psi for certain plastic pipes.
A common standard dimension ratio used for various pipe types is SDR 11, which indicates that the pipe's thickness to diameter ratio ensures structural integrity at a specified pressure. These details are crucial for safety and performance in systems that utilize plastic piping, such as chemical processing, water supply, or sewage infrastructure.
Comparing Pipes: Economies of Scale in the Chemical Industry, and the provided examples suggest some context for pipe selection and use, particularly in engineering and industrial applications. However, without specific reference values in the question, it is not possible to give a definitive answer for the ASTM pressure rating or standard dimension ratio.