Artículo 147.- Las tuberías usadas para sistemas contra incendios deben exceder o por lo menos igualar los requerimientos establecidos por alguno de los siguientes estándares de fabricación:
<table> <thead> <tr> <th>Materiales y Dimensiones</th> <th>Estándar</th> </tr> </thead> <tbody> <tr> <td colspan="2">Tubería metálica:</td> </tr> <tr> <td>• Specifications for black and hot-dipped zinc-coated (galvanized) welded and seamless steel pipe for fire protection use</td> <td>ASTM A 795</td> </tr> <tr> <td>• Specification for welded and seamless steel pipe</td> <td>ANSI/ASTM A 53</td> </tr> <tr> <td>• Wrought steel pipe</td> <td>ANSI/ASME B36.10M</td> </tr> <tr> <td>• Specification for electric resistance-welded steel pipe</td> <td>ASTM A 135</td> </tr> <tr> <td colspan="2">Tuberías de cobre:</td> </tr> <tr> <td>• Specification for seamless copper tube</td> <td>ASTM B 75</td> </tr> <tr> <td>• Specification for seamless copper water tube</td> <td>ASTM B 88</td> </tr> <tr> <td>• Specification for general requirements for wrought seamless copper and copper-alloy tube</td> <td>ASTM B 251</td> </tr> <tr> <td>• Fluxes for soldering applications of copper and copper-alloy tube</td> <td>ASTM B 813</td> </tr> <tr> <td>• Brazing filler metar (classification BCuP-4)</td> <td>AWS A5.8</td> </tr> <tr> <td>• Solder metal , 95-5 (tin-antimony-grade 95TA)</td> <td>ASTM B 32</td> </tr> <tr> <td>• Alloy metals</td> <td>ASTM B 446</td> </tr> <tr> <td colspan="2">No metalicos</td> </tr> <tr> <td>• Nonmetalic piping specification for special listed chlorinated polyvinyl</td> <td>ASTM F 442</td> </tr> <tr> <td>• Specification for special listed polybutylene (PB) pipe</td> <td>ASTM D 3309</td> </tr> </tbody> </table>