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1,Cast Iron Grating Description :
A grating is a removable plate forming the lid over the opening of a manhole, to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
A grating sits on metal base, with a smaller inset rim which fits the cover. The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques.
2,Main Features of the Ductile Iron Grating:
FRP manhole covers allow customers’ innovative design, logo, or etc. we have our own design team who can also offer design work for customers.
The cover is not sprayed in surface but painted in whole material so that the color can keep no fading.
·Good visual effect
(1)The Standards: EN124
(2)Size range: DN200mm-1200mm
(3) Class: B125, C250, D400, E600, F900
(4)Shape: square, round, rectangle, triangle and so on.
We have organized several common questions for our clients，may help you sincerely：
Q. I’ve measured my clear opening size but none of your gratingmatch it, can you offer anything?
A. It’s likely that your cover is quite old and in imperial measurements which are no longer manufactured. However, we can offer bespoke solutions with gratings made to the specification you require.
Q. The project I’m working on requires a grating with a quality finish, what’s available?
A. Naturally, galvanised steel of black polypropylene aren’t always ideal, and so we offer brass or stainless steel edging, as well as complete stainless steel grating.
Q. Odours are coming through where I have installed my grating, why?
A. Your cover must be sealed and locked, or neoprene sealed, so you would require a T-Range Cover, or if you require a solid top, a selection of the PC range (e.g. PC2BG3, PC6CG3, not PC2BG) are suitable.
Q. I need access through my grating on a regular basis, is this possible?
A. Yes, the majority of covers have built-in lifting keys, and for those that don’t we also supply lifting keys. However, the best way to obtain easy access is to have a bespoke, hinged grating.
Q. Can I fit a square grating into a round chamber?
A. Yes, there are a select few manhole covers which are square-to-round, meaning they will fit square or round chambers.
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