A standard grade of 3 inch steel pipe has an outside diameter of 3.5 inches and an inside diameter of 3.068 inches. What is the nominal size of steel pipe having an outside diameter of 4.0 inches and an inside diameter of 3.548 inches?
A standard grade of 3 inch steel pipe has an outside diameter of 3.5 inches and an inside diameter of 3.068 inches. What is the nominal size of steel pipe having an outside diameter of 4.0 inches and an inside diameter of 3.548 inches?