This standard describes grooved and shouldered joints for ductile-iron pipe, metallic pressure pipe of iron pipe size, fittings, and other components for water service. The standard describes 4-in. through 36-in. (100-mm through 900-mm) diameter grooved ductile-iron pipe; 3/4-in. through 24-in. (19-mm through 600-mm) diameter grooved steel, aluminum, brass, and other metallic pipe of iron pipe size (IPS) dimensions; and 4-in. through 64-in. (100-mm through 1,600-mm) nominal diameter shouldered ends for ductile-iron pipe and metallic pipe of IPS dimensions. Revisions made to the standard in this edition include the following: expanded scope to include 30- and 36-in. pipe; nominal dimensions were converted to soft metric units, 1 in. = 25 mm; gasket material grade changes were added in Table 1; and, nominal wall thickness changes to pipe sizes 18 in. and larger in Tables 2 and 3.