This Standard covers the standardization of dimensions of welded and seamless wrought steel pipe for high or low temperatures and pressures.
The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipe NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes.
Citing ASTM Standards
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