The Stormwater RHS Adaptor connects 100mm or 150mm PVC stormwater pipe directly to standard rectangular hollow section (RHS) steel profiles in one clean, reliable joint. Used on residential crossovers, infill developments, and light commercial sites where the drainage run transitions from round PVC pipe to the flat RHS profile needed to cross under driveways and footpaths.

Available in six PVC-to-RHS configurations across PVC and PETG materials. Since 1957, Vincent Buda and Company has stocked the stormwater fittings that builders need to complete drainage runs on time and on spec. Vincent Buda and Company stocks the full range for same-day or next-day delivery within the Sydney Metro. Courier delivery available Australia-wide.

Product Specifications

• 100mm PVC inlet / 200mm x 100mm RHS outlet: PVC material
• 100mm PVC inlet / 150mm x 100mm RHS outlet: PVC material
• 100mm PVC inlet / 125mm x 75mm RHS outlet: PETG material
• 100mm PVC inlet / 150mm x 50mm RHS outlet: PETG material
• 150mm PVC inlet / 200mm x 100mm RHS outlet: PETG material
• 150mm PVC inlet / 150mm x 100mm RHS outlet: PETG material
• Application: Gravity stormwater drainage only (not rated for pressurised lines)

Key Features at a Glance

• Six Standard Configurations: Covers 100mm and 150mm PVC inlets across the most common RHS outlet profiles in residential and light commercial stormwater work.
• Positive Fit Design: Each adaptor is sized to its specific PVC inlet and RHS outlet, so there is no play in the joint and sealant holds securely.
• PVC and PETG Materials: Configuration options suit both standard PVC and higher-impact PETG requirements depending on the installation.
• Fast Installation: Slide the PVC pipe into the inlet end, apply sealant at the overlap, and fit the RHS over the outlet end.

Primary Applications

• Residential Stormwater Crossovers: Connects the household PVC drainage line to the RHS run that crosses from the property boundary to the kerb.
• Infill Development Drainage: Used in tight-block residential builds where RHS provides a low-profile pipe run alongside footings.
• Landscaping and Driveway Works: Transitions downpipe or drainage PVC into RHS where a flat-profile pipe run is needed under concrete or paving.
• Light Commercial Drainage Connections: Suits any project requiring a fast, reliable PVC-to-RHS transition in a standard stormwater system. View the full Stormwater collection for compatible products.