Cast & Ductile Iron Sump Grates

Cast and ductile iron sump grates have long been a part of R&S Grating's inventory having been sold for over 30 years.

The advantage of cast and ductile iron grates is their strength, coming directly from the manufacturing procedure, where they are poured as a single unit, not requiring secondary joins in the design.

R&S Grating stock cast iron grates in Class B (light duty), Class C (medium duty) and Class D (heavy duty) of AS3996. Ductile iron sump grates are stocked in Classes E – G (extra heavy duty) of AS3996.

More information on cast & ductile iron sump grates.

Cast and ductile iron sump grates are available in a variety of patterns, however the standard design is with rectangular holes with curved ends, as shown in the picture on the left. Different sizes and class ratings have varying numbers of ribs, the details of which can be seen on the product image for individual products. Speciality sump grates are also available in cast iron, with a variety of patterns available, offering an aesthetically unique vibe to your installation area.


Available Products

Cast and ductile iron sump grates are stocked in a variety of sizes in Class B (light duty), Class C (medium duty), Class D (heavy duty) and Classes E – G (extra heavy duty) of AS3996. If you're unsure what the most appropriate class rating for your application is, review "Choosing the right sump grate."


Class B (Light Duty) Cast Iron Sump Grates


Class B (light duty) cast iron sump grates are ideal for residential properties and areas subject to only light, non-commercial vehicles.  If you're concerned about safety for bikes or wheel chairs, consider looking at weaved grates or small gap sump grates. Click on a particular pit size below to view more information.

300x300mm Pit Size, Light Duty

Product Image

300 x 300mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

Product Specifications

Product Code: SG-L-CB-3030  
Pit Size: 300 x 300mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

450x450mm Pit Size, Light Duty

Product Image

450 x 450mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-4545  
Pit Size: 450 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x450mm Pit Size, Light Duty

Product Image

600 x 450mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-6045  
Pit Size: 600 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x600mm Pit Size, Light Duty

Product Image

600 x 600mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-6060  
Pit Size: 600 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x600mm Pit Size, Light Duty

Product Image

750 x 600mm Pit Size, Light Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-L-CB-7560  
Pit Size: 750 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x750mm Pit Size, Light Duty

Product Image

750 x 750mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-7575  
Pit Size: 750 x 750mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x600mm Pit Size, Light Duty

Product Image

900 x 600mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-9060  
Pit Size: 900 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x900mm Pit Size, Light Duty

Product Image

900 x 900mm Pit Size, Light Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-L-CB-9090  
Pit Size: 900 x 900mm
Product Weight: – kg Grate & frame weight.
Class Rating: B of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 


Class C (Medium Duty) Cast Iron Sump Grates

Class C (medium duty) cast iron sump grates are best suited for areas experiencing light commercial traffic, such as shopping centre car parks that don't experience heavy duty commercial vehicles.  If you're concerned about safety for bikes or wheel chairs, consider looking at weaved grates or small gap sump grates. Click on a particular pit size below to view more information.

300x300mm Pit Size, Medium Duty

Product Image

300 x 300mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-3030  
Pit Size: 300 x 300mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

450x450mm Pit Size, Medium Duty

Product Image

450 x 450mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-4545  
Pit Size: 450 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x600mm Pit Size, Medium Duty

Product Image

600 x 600mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-6060  
Pit Size: 600 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x600mm Pit Size, Medium Duty

Product Image

750 x 600mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-7560  
Pit Size: 750 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x750mm Pit Size, Medium Duty

Product Image

750 x 750mm Pit Size, Medium Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

 

Product Specifications

Product Code: SG-M-CB-7575  
Pit Size: 750 x 750mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x600mm Pit Size, Medium Duty

Product Image

900 x 600mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-9060  
Pit Size: 900 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x750mm Pit Size, Medium Duty

Product Image

900 x 750mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-9075  
Pit Size: 900 x 750mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x900mm Pit Size, Medium Duty

Product Image

900 x 900mm Pit Size, Medium Duty, Cast Iron Grate & Frame

 

 

Product Specifications

Product Code: SG-M-CB-9090  
Pit Size: 900 x 900mm
Product Weight: – kg Grate & frame weight.
Class Rating: C of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 


Class D (Heavy Duty) Cast Iron Sump Grates

Class D (heavy duty) cast iron sump grates are ideal for areas experiencing regular heavy duty traffic. In particular this applies to commercial vehicles, such as large delivery trucks and forklifts. If you're concerned about safety for bikes or wheel chairs, consider looking at weaved grates, which are also available in Class D.

300x300mm Pit Size, Heavy Duty

Product Image

300 x 300mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-H-CB-3030  
Pit Size: 300 x 300mm
Product Weight: – kg

 

 

Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

450x450mm Pit Size, Heavy Duty

Product Image

450 x 450mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

 

Product Specifications

Product Code: SG-H-CB-4545  
Pit Size: 450 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x450mm Pit Size, Heavy Duty

Product Image

600 x 450mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-H-CB-6045  
Pit Size: 600 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x600mm Pit Size, Heavy Duty

Product Image

600 x 600mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

 

Product Specifications

Product Code: SG-H-CB-6060  
Pit Size: 600 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x600mm Pit Size, Heavy Duty

Product Image

750 x 600mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-H-CB-7560  
Pit Size: 750 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

750x750mm Pit Size, Heavy Duty

Product Image

750 x 750mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

 

Product Specifications

Product Code: SG-H-CB-7575  
Pit Size: 750 x 750mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x600mm Pit Size, Heavy Duty

Product Image

900 x 600mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

 

Product Specifications

Product Code: SG-H-CB-9060  
Pit Size: 900 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x900mm Pit Size, Heavy Duty

Product Image

900 x 900mm Pit Size, Heavy Duty, Cast Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-H-CB-9090  
Pit Size: 900 x 900mm
Product Weight: – kg Grate & frame weight.
Class Rating: D of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 


Classes E – G (Extra Heavy Duty) Ductile Iron Sump Grates

Areas such as wharfs, airports and major freeways require extra heavy duty grating, rated to Classes E – G of AS3996. R&S Grating stock a range of ductile iron sump grates to suit standard pit sizes in these areas. An alternative product would be weaved grates, which are routinely manufactured to Classes E & F of AS3996 and come with the added advantage of being bike and wheel chair safe. Click on a product below to view more information.

450x450mm Pit Size, Extra Heavy Duty

Product Image

450 x 450mm Pit Size, Extra Heavy Duty, Ductile Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-EH-D-4545  
Pit Size: 450 x 450mm
Product Weight: – kg Grate & frame weight.
Class Rating: E – G of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

600x600mm Pit Size, Extra Heavy Duty

Product Image

600 x 600mm Pit Size, Extra Heavy Duty, Ductile Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-EH-D-6060  
Pit Size: 600 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: E – G of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x600mm Pit Size, Extra Heavy Duty

Product Image

900 x 600mm Pit Size, Extra Heavy Duty, Ductile Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-EH-D-9060  
Pit Size: 900 x 600mm
Product Weight: – kg Grate & frame weight.
Class Rating: E – G of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification  

 


 

 
 

900x900mm Pit Size, Extra Heavy Duty

Product Image

900 x 900mm Pit Size, Extra Heavy Duty, Ductile Iron Grate & Frame

Image currently unavailable.

 

Product Specifications

Product Code: SG-EH-D-9090  
Pit Size: 900 x 900mm
Product Weight: – kg Grate & frame weight.
Class Rating: E – G of AS3996
Grate Size: – x – x -mm
Frame Size: – x – x -mm

 

 

 

 

 

 

 

Downloads

Coming soon.  
Product Specification