Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) - Part 2: Specifications for manholes and inspection chambers
Aluminio y aleaciones de aluminio. Varillas, barras, tubos y perfiles extruidos. Parte 7: Tubos extruidos con punzón, tolerancias dimensionales y de forma.