1.  cover board is made from hot galvanizing material .We can offer metal grating or slot-type drain cover.The slot-type drain cover include centre joint type and partial stitch type .The gridding of grating cover has many diffrents size and you can choose it according to the actual requirements.

Hot galvanized steel grating cover board can effectively resist the erosion of acid soil and biological sulfuric acid., has not rusty,is  able to endure high temperature.     this system is mainly used in plazas,stadium square,walking street and so on.

       2.  it has large displacement, drainage speed can reduce wrestling,and  is able to cope with all sort of rainwater weather.We can ensure the cover’s size according to demands.

      3. it  is easy to install,convenient and save Labour and cost.This prouduct is so important in drainage