Answer :
Final answer:
Steel pipes manufactured in North America under the ASTM, API, or GAS standards may have different specification markings.
Explanation:
False. All steel pipes manufactured in North America under the ASTM, API, or GAS standards may have different specification markings. These standards provide guidelines for the manufacturing, testing, and inspection of steel pipes, but they do not dictate specific markings. The specifications of a steel pipe could include information such as the material grade, pipe dimensions, pressure ratings, and manufacturing process, but the specific markings would depend on the manufacturer and the intended application of the pipe.