HPFLEX® Electrical Corrugated Joiner


HPFLEX® Electrical Corrugated Joiner (formally Building Joiner) is manufactured in Australia to the highest standards with a 25-Year limited warranty**. Manufactured with B.E.P certified material, permitting use in Greenstar projects. Spigots are incorporated in the design, allowing for easy installation directly into existing electrical conduit or concrete pits.

HPFLEX® Corrugated Joiner is designed to connect conduit together underground with increased flexibility. Suitable for connections to buildings, concrete pits, or as a bend alternative, this product removes the need for worm clamps and rubber joiners, significantly reducing costs. Simply glue as per normal. This specialist product has been designed with integrated dual spigots which these dual spigots allow electricians to easily connect to existing rigid conduit or underground concrete pits.

Available in 100mm and 150mm* these are the largest HPFLEX® electrical corrugated conduit available in the market, and as always our HPFLEX® range is covered by our 25-year limited warranty**.

HP Profiles 100mm and 150mm Corrugated Conduit Joiner Specifications:

  • Made in Australia
  • 100mm & 150mm Diameter
  • Extreme UV (T) Stabilised
  • Lead-Free
  • B.E.P Certified
  • Spigot incorporated
  • Available in Orange or White (Communications)

*See the “Downloads” Tab for more information and accurate measurements.

HP Profiles is the leading manufacturer of Australian made corrugated conduit.

**HP Profiles’ liability diminishes over the term of the warranty. See here for full warranty terms and conditions or to submit a claim.




Orange or White

Duty Rating

Heavy Duty (HD)

UV Resistance

Extreme UV (T) Resistance

Compression Rating

Minimum 1250 N / 5cm

Impact Rating

Minimum 6 Joule

Maximum Temperature


Minimum Temperature


Ingress Protection


Dielectric Strength


B.E.P Certified


Flame Resistance

Non-flame propagating (UL94-V0)

Lead Free


Attracts Rodents


Intended use

Indoor or Outdoor Static Installations :
- High UV Exposure
- Prefabricated buildings
- Oil/fuel refineries
- Underground
- Concrete
- Industrial
- Seaside


HPPCJ100HPFLEX® H/Duty Corrugated Building Joiner 100mm x 2.1m Orange
HPPCJ100WHPFLEX® H/Duty Corrugated Building Joiner 100mm x 2.1m White
HPPCJ150HPFLEX® H/Duty Corrugated Building Joiner 150mm x 2.1m Orange
HPPCJ150WHPFLEX® H/Duty Corrugated Building Joiner 150mm x 2.1m White