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Do You Have Strength 100% Waterproof Sewer Cover Dimension 993mm

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According to customer or project require, there are several different types, as follow:
1.100% waterproof
sewer cover
2.With hole 
BMC manhole cover
3.No hole, but not 100% water proof (With stainless steel, easy to open and screw lock. It's safety and anti-theft.)
SMC manhole cover

Manhole lid also can be customized and the color, plate also optional.
Now, let's us talk about the advantages:
igh load rating and strength
Similar hard property as cast iron, while have a overwhelming advantage on stretch recovery.
Against theft and safety options
Zero theft value, reducing potential accident and further maintenance cost caused by thieves.
Surface anti-slip thread guarantees safe road condition even in extreme weather.
locks are available as an option molded into the cover to improve security rate.
Non-electricity conduction and non-heat conduction.
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