Practical Channel Drainage Systems That Work 

200 Series Shoe-Guard installed along the Canberra Waterfront

Thundaflo 200 Series with variable built-in-fall and E400 Shoe-guard ductile iron grating installed at NPD Taupo. The E400 stands for load class E, 400kN as tested according to NZA standard AS3996. Generally the load standard for this type of use is class D210, however at Thundaflo we chose to double up. The grates are powered coated which provide a "sheen" and added protection.

125 Series E400 Ductile Iron Grating - Gull Taihape

Thundaflo 125 Series with Variable Built-in-Fall and Powered Coated Ductile Iron Grating. A high profile award winning site. Thundaflo all the way...

125 Traverse Rail Series - KiwiRail Waltham Christchurch

Heavy Duty Ductile Iron Grates are tested at Opus Laboratories NZ

Thundaflo E2 Level Entry Threshold Drain with FRP Grating at a garage entrance. This section is reinforced to withstand vehicle loading, with support systems spaced at 125mm intervals where the loading occurs.

Thundaflo 120 Series with variable built-in-fall and FRP grating, located at the bottom of a steep driveway in Howick, Auckland. A cost effective alternative to the cheap plastic drains.

E2 Level Threshold with Slim-Line Wedge-Wire Grating - Hamurana, Rotorua

Rail Rebate - KiwiRail Christchurch

200 Series Stainless Wedge-Wire Grating - Tauriko, Tauranga

Thundaflo E2 Level Threshold Drain with Black Wedge-wire Grating.



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