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Round Downpipes

Round Downpipes

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Our Downpipes range have a variety of lengths and sizing specific to customer specifications. which are cut from either Colorbond® Steel or Zincalume® steel coil which has a high tensile structure that provides long lasting product to handle Australia’s diverse conditions.   


Stramit® Downpipes are coated with Zinc-Aluminium / Zinc-Aluminium-Magnesium alloy and COLORBOND® steel will give excellent durability in almost all locations more than 200m from a marine environment or in some light industrial applications. 


Size Stocked Length Custom Cut
90mm 2400 Up to 6M
100mm 2400 Up to 6M
150mm 2400 Up to 4M
200mm 2400 Up to 3M
225mm 2400 Up to 3M
300mm 2400 Up to 3M


  • Nozzles
  • Astragals  
  • Custom Stand Off Brackets
  • Bends (Offsets)  


The downpipe shall be [insert Stramit Downpipe type] as selected based on size and performance. Material shall be protected steel sheet to Australian Standard AS1397 with a minimum yield stress of 300MPa and an AM100/AZ150 coating with an oven-baked paint film of selected colour, or a plain AM125/AZ150 coating. All accessories are to be fully compatible as recommended by the manufacturer.

The product and its accessories shall be installed strictly in accordance with the manufacturer’s recommendations. Flashings and all adjacent products shall be supplied in compatible materials as specified.

All work shall be fixed in a workman like manner, leaving the job clean and weather tight. All debris (screws, rivets, cuttings and filings, etc) shall be cleaned off daily. Repair all minor blemishes with touch up paint supplied by the manufacturer.

Note: Some products are supplied in 300MPa steel with galvanised Z275 coating.

Why Choose HMR Supplies?

Extensive Range

Fast Delivery

Quality Guaranteed

Established in 1975

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