WEBCement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water. Fittings are cement-mortar lined and coated with an asphaltic material, inside and outside, in accordance with ANSI/AWWA C104/A21.4. U.S. Pipe’s C110 Mechanical Joint Fittings are available in 30” through 48” sizes. Wye