Artículo 144.- En el caso de los recubrimientos y/o forrado de las tuberías enterradas este se debe realizar de acuerdo con las siguientes normas:
<table> <thead> <tr> <th>Materiales</th> <th>Estándar</th> </tr> </thead> <tbody> <tr> <td>* Cement Mortar Lining for ductile Iron Pipe and Fittings for Water</td> <td>AWWA C104</td> </tr> <tr> <td>* Polyethylene Encasement for Ductile Iron Pipe systems</td> <td>AWWA C105</td> </tr> <tr> <td>* Coal-Tar Protective Coating and Linings for Steel Water Pipelines Enamel and Tape - Hot Applied</td> <td>AWWA C203</td> </tr> <tr> <td>* Cement-Mortar Protective Lining and Coating for Steel Water Pipe 4 in. and larger - Shop applied</td> <td>AWWA C205</td> </tr> <tr> <td>* Cement-Mortar Lining of Water Pipe Lines 4 in. and Larger - in place</td> <td>AWWA C602</td> </tr> </tbody> </table>