نظرة عامة
Slotted pipes use longitudinal slots rather than round perforations. ALFA documents this as Slotted PVC per RDA for groundwater table control.
For round-hole subsoil drainage see Perforated Drainage Pipes.
Exact pipe OD, wall and slot layout for a project should be confirmed with ALFA — dimensional wall tables were not cleanly extracted for public republication.
Exact configuration, stock availability and project-specific technical requirements should be confirmed with ALFA AL-ARABIA against the applicable technical documentation.
