706 Grande

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Polypropylene channel with Class G rated cast iron grates. Each high strength cast iron grate is equipped with 8 point security fixings system. Supplied with steel support edging to guarantee higher performance for heavy loads and high wheeled vehicles. Designed for aircraft traffic, loading docks, container terminals, military, mining and all hard wheeled vehicles.

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Class G
Class G
Anti Slip


Internal MeasurementExternal Measurement
300mm x 200mm390mm x 260mmRead more
300mm x 300mm390mm x 360mmRead more
500mm x 500mm590mm x 560mmRead more


Grande Series Channel Diagram


Product CodeLHL1H1D1D2D3D4D5S1S2AKG


Grande Grate Diagram


CodeMaterialDrain Cm²AHH1LFLoad ClassKG
DR706GRATE300Cast Iron4943762050500186 X 16F, G27.2
DR706GRATE500Cast Iron10705802070500165 X 16F, G46.5

Asked Questions

Will cast iron grates rust?

Like most metals, cast iron goes through a natural oxidation process, resulting in an outer protective coating known as rust.  This process is called Patina. Patina is a naturally occurring process and shouldn’t be confused with corrosive rust. 

The two conditions that cause cast iron to rust are:

  • Moisture (Cast iron will begin to patina when the relative humidity exceeds about 64%.)
  • Oxygen

Factors that accelerate rusting:

  • Carbon Dioxide
  • Acids
  • Impurities

Like most metals, cast iron goes through a natural oxidation process, resulting in an outer protective coating known as rust. This process is called Patina.

Patina is a naturally occuring process and shouldnt be confused with corrosive rust. Pantina is good for iron as it provides a protective layer. A metals patina is a thin layer of oxides on the metal that acts to slow down further corrosion. Therefore patina on cast iron grates does not harm the structural integrity. This rust layer shields the cast iron from further oxidation. Think of rust as a corroded armor that protects against additional corrosion. This property allows iron to remain strong & intact for several decades. Unlike steel, cast iron is durable and will not flake. The patination of cast iron grates is predictable, and the duration of each stage depends on local moisture conditions, foot traffic, foreign substances etc.

Once the oxidation process begins, cast iron will turn a bright orange and then fade to a chocolate brown, similar to the colour of manhole covers.

Rust cannot be prevented but the process may be slowed by introducing a buffer material between the iron and atmosphere. Linseed oil can be applied to the grates prior to installation. Another common practice is to spray or powder coat the grates. This coating must be reapplied whenever there is chipping to maintain rust protection.

Where are SABdrain channels & grates made?

SABdrain channels are manufactured & shipped out of Italy. Grates are a mix of overseas & local suppliers.

Where is SABdrain from?

SAB is a part of System Group, a group of companies founded in 1979, one of the main European holdings in the supply of piping systems in PE and PP. The company was born in Sirolo (AN) in 2003, and it moved to Sant’Angelo in Vado in 2007. SAB specializes in moulding and extrusion of plastic materials for the production of compression and electrofusion fittings, drainage channels and products for drip irrigation. They are active in three sectors: irrigation, water and gas, and drainage. 

Where can I purchase SABdrain?

We have over 800 distributors Australia wide. Find your nearest one here.

Alternatively, contact us & we can assist you.

What is the grande series?

The grande series simply refers to any product where the width of the channel is larger than 300mm internally

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